Eid Echad, Shevuah, and Birur in Bava Metzia (2b)

Topics

• The Basic Chakirah: What Does an Eid Echad Accomplish?
• An Eid Hamesaye’a as the Required Birur
• Two Separate Tracks
• Why an Eid May Exempt from De’Oraisa but Not from Heses
• The Difference Between Paying the Claim and Paying the Shevuah
• The Maharam MiRotenburg’s Broad Position
• The Scope of the Maharam’s Rule
• Returning to the Sugya of the Seller
• Rabbi Akiva Eiger’s Inference from Rashi
• Why Would Rashi Prefer Baal Hamekach?
• What Exactly Is Tosafos Asking?
• A Question in the Words or a Question in the Sugya
• The Gemara Never Explicitly Says to Ask the Seller
• A Textual Objection Versus a Halachic Objection
• The Source for Eid Hamesaye’a
• Does “Kam LeShevuah” Mean Only to Obligate?
• The Unique Problem in Our Sugya
• Why Rashi May Accept Eid Hamesaye’a Elsewhere
• The Range of Positions
• Returning to the Mishnah: Metzi’ah and Mekach UMemkar
• Is Moreh Heter the Reason for the Shevuah?
• Two Ways to Read the Gemara’s Conclusion
• Why the Oath May Be Needed Even Though the Division Is Already Determined
• The Alternative: The Shevuah Clarifies the Safek
• The Rashba: Moreh Heter Is Not the Reason, but the Heter
• The Difference from Tosafos
• The Wording of the Gemara Favors Tosafos
• The Difference Between Why and How
• The Rashba’s Question Is More Fundamental
• Why the Gemara Mentions the Rabbanan
• Rashi and Tosafos Define Moreh Heter Differently
• The Nafka Mina
• What “בלא משפט” Excludes
• Two Ways to Address Chashud Amamona
• The Nafka Mina: “אני ארגתיה”
• When the Shevuah Fails, the Chalukah Fails

Transcript

### The Basic *Chakirah*: What Does an *Eid Echad* Accomplish?

The point is not that an *eid hamesaye’a* somehow joins the *shevuah* as a partner. Rather, it removes the need for the *shevuah* by addressing the very factor that generated it. But why should we understand it that way?

At first glance, one might describe the various forms of *ne’emanus* as different levels. Two *eidim* possess complete *ne’emanus*. A *shevuah* provides a lesser degree of verification, and an *eid echad* has still less. Then one might argue that although an *eid echad* is not independently sufficient to establish the monetary claim, it is strong enough to dispense with the lesser verification of a *shevuah*.

But that formulation is difficult. Are we simply assigning numerical values—two *eidim* are a ten, a *shevuah* is a six, and an *eid echad* is somewhere close enough to six to cancel it? That is not a satisfactory definition. Brisker *lomdus* is not a matter of measuring different forms of *ne’emanus* with a tape measure. We must define what each *din* actually does.

Why does an *eid echad* obligate a *shevuah*? Is the eid partially believed, but not believed enough to decide the case, so that the *shevuah* supplies the missing percentage of *ne’emanus*? Or is the structure entirely different?

One possibility is that an *eid echad* creates a *safek* that demands resolution. The *shevuah* is the *mevarer* of that *safek*. The eid does not possess “half-*ne’emanus*”; rather, his testimony places the defendant under an obligation to provide a *birur*. Ordinarily, that *birur* is supplied through a *shevuah*. If another eid comes to support the defendant—an *eid hamesaye’a*—then the necessary *birur* has already been supplied, and the *shevuah* is no longer required.

According to this understanding, the supporting eid is not directly fighting the first eid as in *trei u-trei*. He is addressing the *shevuah*. The first eid created the need for a response; the second eid provides that response. The first eid says, in effect, “You can no longer ignore this claim. Explain what happened.” The defendant may answer through a *shevuah*, or he may answer through an *eid hamesaye’a*.

This is the same basic idea that we discussed regarding *migu* and *koach hata’anah*. A person who is confronted with an unsupported claim is not necessarily obligated to answer at all. If someone simply says, “You owe me money,” the defendant can say, “Who are you? I have nothing to do with you,” and walk away. Since he did not have to offer any *ta’anah*, when he does respond with a weaker *ta’anah*, the *migu* gives him the *koach* of the stronger *ta’anah* that he could have presented—or of his original ability not to engage the claim at all.

Here too, when the claimant has no supporting eid, the defendant may have no obligation to explain himself. Once an *eid echad* supports the claim, however, the defendant must provide a *birur*. A *shevuah* satisfies that requirement. An *eid hamesaye’a* may satisfy the same requirement. The supporting eid does not necessarily prove the defendant’s version with independent monetary *ne’emanus*; he supplies the answer that the first eid made necessary.

That is one possible way to understand the principle of *eid hamesaye’a*: not as a competition between numerical levels of credibility, but as a *din* in the obligation to provide a *birur*.

### An *Eid Hamesaye’a* as the Required *Birur*

Since a defendant is not obligated to respond to a completely unsupported claim, the appearance of an *eid echad* changes the legal situation. The eid does not necessarily tell Beis Din exactly what happened. Rather, he creates an obligation upon the defendant to explain himself and to provide a *birur*. A *shevuah* is one way of doing so. If the defendant brings an *eid hamesaye’a*, he has supplied a *birur* of the same required kind.

This is not necessarily a case of one eid directly contradicting another. The supporting eid may not be functioning through the rules of *hachashah* at all. He may simply be fulfilling the obligation created by the first eid. The claimant’s eid requires an answer; the defendant’s eid is the answer.

As we proceed through the Rishonim, we will see that the relationship between *eid echad* and *shevuah* is a major *yesod* in the sugya. Much of the *lomdus* depends upon identifying precisely where the *eid hamesaye’a* operates.

### Two Separate Tracks

There are two distinct possibilities:

First, the *eid hamesaye’a* may operate upon *ne’emanus*. The first eid creates a deficiency in the defendant’s position, and the supporting eid restores the balance. Once the *ne’emanus* problem has been resolved, there is no reason for a *shevuah*.

Second, the *eid hamesaye’a* may operate directly upon the obligation of *shevuah*. The defendant owes a *birur*, and the supporting eid serves as the substitute for that *shevuah*. Under this approach, the question is not whether the eid possesses enough *ne’emanus* to decide the money. The question is whether he can discharge the specific obligation of *birur*.

This distinction may explain the striking position associated with the Baal HaTerumos. The general discussion among the Rishonim is whether an *eid hamesaye’a* can exempt only from a rabbinic *shevuah* or even from a *shevuah de’Oraisa*. The Baal HaTerumos distinguishes *Shevuas Heses*: even if an *eid hamesaye’a* can exempt from a Torah-level *shevuah*, he may nevertheless fail to exempt from *Heses* (Baal HaTerumos, Sha’ar 21, Part 5, siman 2).

Why should a Torah *shevuah* be easier to remove than a rabbinic *shevuah*?

According to the framework we have developed, the answer is compelling. A *shevuah de’Oraisa* may arise because there is an unresolved *ta’anah* or *safek* that requires a *birur*. If an *eid hamesaye’a* supplies that *birur*, the basis of the *shevuah* disappears. *Shevuas Heses*, however, was instituted by the Chachamim even where the ordinary Torah structure would not have imposed a *shevuah*. It is an independent *takanah* designed to regulate claims and prevent people from casually denying obligations. Even after the evidentiary issue has been addressed, the rabbinic requirement may remain.

Thus, an *eid hamesaye’a* may solve the problem of *ne’emanus* without necessarily removing an independently imposed *shevuah*. If the *shevuah* exists only because a *birur* is lacking, the eid can provide that *birur*. But if the Chachamim required a *shevuah* for a separate reason, the eid may not be the substitute they demanded.

This is the essential question that must accompany the entire sugya: does the *eid hamesaye’a* repair the *ne’emanus*, or does he discharge the *shevuah* itself?

### Why an Eid May Exempt from *De’Oraisa* but Not from *Heses*

We can now sharpen the issue. Suppose there is no independent monetary *ne’emanus* in an *eid echad*. Why, then, should an *eid hamesaye’a* accomplish anything?

The answer is that the entire discussion may not concern monetary *ne’emanus* at all. An *eid echad* against the defendant creates an obligation to provide a *birur*. The defendant can discharge that obligation through a *shevuah*, or he can discharge it by presenting an *eid hamesaye’a*. The supporting eid does not establish the monetary facts as two *eidim* would. He answers the demand for a *birur*.

This also explains how an *eid hamesaye’a* could exempt from a *shevuah de’Oraisa* yet fail to exempt from a rabbinic *shevuah*. The Torah *shevuah* may be the direct response to an unresolved evidentiary claim. Once the defendant supplies the required *birur* through his eid, nothing further is needed. A rabbinic *shevuah*, however, may have been imposed even after the ordinary evidentiary question was resolved. In that case, the supporting eid has addressed the *ne’emanus*, but he has not fulfilled the separate *takanah* of the Chachamim.

### The Difference Between Paying the Claim and Paying the *Shevuah*

There are two ways to describe what the defendant owes. One can say that he owes an answer to the monetary claim: “Explain why you do not owe the money.” Alternatively, one can say that he now owes a specific *shevuah*.

If he owes only a *birur* of the claim, then several forms of payment can satisfy that debt. He may “pay” with a *shevuah*, or he may “pay” with an *eid hamesaye’a*. It is like satisfying an obligation with cash, a check, or another accepted method. The forms differ, but each fulfills the same requirement.

If, however, the obligation is specifically to swear, then an eid is not automatically interchangeable with the *shevuah*. The eid may prove the defendant’s position, but the particular *chiyuv* of *shevuah* could remain.

### The Maharam MiRotenburg’s Broad Position

The Maharam MiRotenburg takes the power of *eid hamesaye’a* very far. As cited by the Rosh, an *eid hamesaye’a* can exempt even from a *shevuah de’Oraisa*. The Maharam derives this from the Torah’s treatment of an *eid echad* and from a *kal vachomer*: if one eid can weaken the *muchzak* and obligate him to swear, then certainly one eid can strengthen the *muchzak* and exempt him from swearing (Rosh, Bava Metzia 1:3).

According to this approach, the supporting eid is not merely correcting a small deficiency in *ne’emanus*. He is a valid substitute for the *shevuah* itself. Wherever the defendant owes a *birur*, the eid can supply it. Whether the original obligation is *Shevuas HaShomrim*, the *shevuah* of *modeh bemiktzas*, or a *shevuah* generated by an *eid echad*, the *eid hamesaye’a* may serve as the required answer.

This is the central contrast. One approach says that the *eid hamesaye’a* removes the factor that produced the *shevuah*. The other says that he stands in place of the *shevuah*. In the first approach, his effectiveness depends upon why that particular *shevuah* was imposed. In the second, the eid himself is an alternative form of *birur* and can therefore exempt broadly.

We must now examine the Rishonim carefully and determine which model each one adopts.

### The Scope of the Maharam’s Rule

The Maharam MiRotenburg appears to formulate a broad principle: an *eid hamesaye’a* can exempt from *shevuah* across the board. Nevertheless, even within such a broad formulation, one must ask whether every oath is truly included.

A particular question arises regarding the *shevuah* that an item is not presently in the shomer’s possession—*she’einah birshuso*. The Gemara describes the oaths imposed upon a shomer: **שלא פשעתי בה, שלא שלחתי בה יד, ושאינה ברשותי**—he did not act negligently, he did not misuse the deposit, and it is not currently in his possession (Bava Metzia 6a; see also Bava Metzia 34b–35a). These are all associated with *Shevuas HaShomrim*, but the oath of *she’einah birshuso* may have a distinct character.

Even if an *eid hamesaye’a* exempts from the ordinary *Shevuas HaShomrim*, perhaps it does not exempt from *she’einah birshuso*. That oath may not merely clarify the historical event that occurred to the object. It may address a separate concern that the object is still in the shomer’s possession. If so, the general rule of *eid hamesaye’a* might not automatically apply.

This is why the exact language of the Rishonim must be read carefully. When a source says that an *eid hamesaye’a* does not exempt, does it mean that the entire principle is rejected? Or is it referring only to a particular category of *shevuah*, such as *she’einah birshuso*? One cannot build a *shittah* from an imprecise citation. The scope of the statement is essential.

### Returning to the Sugya of the Seller

We now return to the Gemara’s question in the case of two buyers disputing a sale: **“ולחזי זוזי ממאן נקט”**—let us see from whom the seller took the money (Bava Metzia 2b).

Rashi explains the sugya through the special *ne’emanus* of the *baal hamekach*, the seller. Rabbeinu Tam, as presented by Tosafos, understands the seller as an ordinary *eid echad*. He supports one buyer and testifies against the other. The buyer whom he supports is exempted from the Mishnah’s oath through *eid hamesaye’a*, while the other must swear a Torah oath against the eid (Tosafos to Bava Metzia 2b, s.v. **ולחזי זוזי ממאן נקט**).

The question is how to understand the disagreement. Does Tosafos reject Rashi because the Gemara’s wording does not sound as though it is invoking the special din of *baal hamekach*? Or does Tosafos hold that, once the sale is no longer in the seller’s possession, the seller does not possess that special *ne’emanus* at all?

Those are very different readings. If the objection is merely textual, then Tosafos may concede that the seller could theoretically possess *ne’emanus* as *baal hamekach*; the Gemara simply did not formulate the question that way. If the objection is substantive, then Tosafos is denying Rashi’s entire basis and replacing it with the rule of *eid hamesaye’a*.

This distinction also affects how we classify other authorities. A Rishon who does not explain the sugya through *baal hamekach* may still agree with Rashi’s din in principle, but prefer the *eid-echad* reading because it fits the language of the Gemara. Conversely, he may reject the seller’s special *ne’emanus* and therefore be forced to rely upon *eid hamesaye’a*.

Before deciding which *shittah* a particular authority follows, we must first determine why he read the sugya as he did.

### Rabbi Akiva Eiger’s Inference from Rashi

Rabbi Akiva Eiger suggests that Rashi’s explanation is not consistent with Rabbeinu Tam’s principle. If Rashi agreed that an *eid hamesaye’a* exempts from *shevuah*, why did he need to invoke the special *ne’emanus* of the *baal hamekach*? The seller could simply function as an ordinary *eid echad*: he would exempt the buyer whom he supports and obligate the other buyer to swear.

The inference is powerful, but it is not conclusive. One can answer that Rashi may agree with the din of *eid hamesaye’a* and nevertheless explain this particular sugya through *baal hamekach*. A commentator may choose one valid mechanism without intending to deny another.

In other words, the fact that Rabbeinu Tam rejects Rashi’s explanation does not necessarily mean that Rashi rejects Rabbeinu Tam’s din. The disagreement may be one-directional. Rabbeinu Tam may insist that the wording of the Gemara points to *eid echad*, while Rashi may accept that an *eid hamesaye’a* generally exempts but maintain that the present sugya is speaking about the seller’s stronger status.

### Why Would Rashi Prefer *Baal Hamekach*?

The question remains: if the ordinary din of *eid echad* could explain everything, why would Rashi introduce *baal hamekach*?

One possibility is that Rashi understands the Gemara to be discussing a stronger and more direct *ne’emanus*. The seller is not merely an outside witness. He is the person who performed the transaction and knows to whom he consented to sell. His testimony may therefore identify the buyer through the din of *baal hamekach* rather than merely create or remove a *shevuah*.

Another possibility is that Rashi found the language of the sugya more naturally connected to the money received by the seller and therefore explained it within the laws of the transaction itself. That still would not establish that Rashi rejects *eid hamesaye’a* elsewhere.

This is the force of the *yesh lidchos*—the proof can be deflected. Rashi’s choice of one explanation is not, by itself, evidence that he denies the other din.

The issue depends upon how exclusive Rashi’s explanation is. If Rashi is saying that only *baal hamekach* can account for the Gemara, then he is indeed disagreeing with Rabbeinu Tam. But if he is merely selecting *baal hamekach* as the preferred explanation of this passage, he may still accept Rabbeinu Tam’s rule in other cases.

We therefore cannot label Rashi’s position until we understand what compelled his reading. The central question is not simply, “What explanation did Rashi give?” It is, “Why did Rashi need that explanation?”

### What Exactly Is Tosafos Asking?

The same distinction must be applied to the Ri’s reading in Tosafos. Why does Tosafos decline to explain the Gemara as Rashi does?

There are two possible types of *kashya*.

The first is a *kashya* in the wording of the daf. The Gemara says, **“ולחזי זוזי ממאן נקט”**—let us see from whom he took the money. Tosafos may be arguing that the language does not sound like a question about the special *ne’emanus* of the *baal hamekach*. If that is the entire objection, Tosafos has not denied that the seller could possess such *ne’emanus* in principle. He is simply saying that this is not what the Gemara is discussing here.

The second is a *kashya* in the structure of the sugya itself. Tosafos may hold that once the item is no longer in the seller’s possession, the seller cannot determine ownership through the din of *baal hamekach*. The seller can function only as an *eid echad*. On this reading, Rabbeinu Tam’s explanation is not merely a better fit in the words; it is the only available legal mechanism.

This becomes crucial when attempting to identify the *shittah* of another Rishon. If he rejects Rashi only because the Gemara’s wording does not mention asking the seller, we have no proof that he denies *ne’emanus baal hamekach*. He may agree that such a *ne’emanus* exists, yet maintain that the present passage is about *eid echad*.

But if he rejects Rashi because the seller is not believed as *baal hamekach* once the sale has left his possession, then we must ask a second question: is the seller at least believed as an *eid echad*? If yes, we have arrived at Rabbeinu Tam’s principle of *eid hamesaye’a*. If not, then the authority is rejecting not only Rashi’s special *ne’emanus* but also the use of the seller as a supporting eid.

### A Question in the Words or a Question in the Sugya

This is the methodological difference between what we might call a Pnei Yehoshua-type *kashya* and a *kashya* in the underlying sugya. A *kashya* in the words asks: How can this explanation fit the precise language of the Gemara? A *kashya* in the sugya asks: How can this legal mechanism work at all?

The two must not be confused. A commentator may reject an interpretation because it does not fit the phraseology, while fully accepting its halachic principle elsewhere. Conversely, he may reject it because he denies the legal principle itself.

Therefore, when Tosafos explains **“ולחזי זוזי ממאן נקט”** through *eid echad*, the *chiddush* is not merely that the seller can testify. The *chiddush* is that his testimony functions in two directions: it obligates the buyer against whom he testifies and exempts the buyer whom he supports. That is Rabbeinu Tam’s din of *eid hamesaye’a*.

The next step is to examine the parallel Tosafos and determine whether the objection to Rashi is textual or fundamental. Only then can we know which authorities truly disagree about *eid hamesaye’a*.

### The Gemara Never Explicitly Says to Ask the Seller

The first and most immediate difficulty with Rashi is simple: where does the Gemara say that we ask the seller?

The words are **“ולחזי זוזי ממאן נקט”**—let us see from whom he took the money (Bava Metzia 2b). The Gemara does not explicitly say, “Let us ask the *mocher*.” It does not even state that the seller is present. He may no longer be available at all. Rashi introduces the seller’s statement into the sugya and understands the phrase to mean that we determine from whom he accepted payment willingly.

This may be precisely what troubles Tosafos. The objection may not be that the seller lacks *ne’emanus*. It may be that Rashi has inserted an entire procedure—questioning the seller—that is not stated in the Gemara’s words.

If that is Tosafos’s *kashya*, the alternative reading is straightforward. “Let us see from whom he took the money” means that the existing facts or testimony should determine which buyer paid. It need not mean that we summon the seller and rely upon the special *ne’emanus* of *baal hamekach*.

### A Textual Objection Versus a Halachic Objection

We must again distinguish two possibilities.

Perhaps Tosafos is saying: the seller cannot be believed as *baal hamekach* once the item is no longer in his possession. That is a halachic objection to Rashi.

Or perhaps Tosafos is saying: even if the seller would be believed, the wording of this Gemara does not describe asking him. That is a textual objection.

If the objection is halachic, then we must determine whether the seller nevertheless functions as an ordinary *eid echad*. If he does, we arrive at Rabbeinu Tam’s explanation. If he does not, then both mechanisms are unavailable.

If the objection is merely textual, however, Tosafos may agree to Rashi’s halachic principle and may also agree to Rabbeinu Tam’s rule of *eid hamesaye’a*. He simply believes that the local wording of the sugya should be read differently.

This is why it is dangerous to infer a complete *shittah* from the fact that a Rishon chose a different *pshat*. One must know what bothered him.

### The Source for *Eid Hamesaye’a*

The broader question then returns: how can any authority deny that an *eid hamesaye’a* exempts? The Torah states, **“לא יקום עד אחד באיש לכל עון ולכל חטאת”**—one witness shall not rise against a man for any iniquity or sin (Devarim 19:15). Chazal derive that although one eid does not rise to impose monetary liability, **“אבל קם הוא לשבועה”**—he does rise to impose a *shevuah* (Shevuos 40a).

But what exactly does **“קם הוא לשבועה”** establish? Does it mean only that an *eid echad* can create a *chiyuv shevuah*? Or does it mean that an eid has standing in the entire realm of *shevuah*, both to obligate and to exempt?

That is the foundation of the dispute. The verse clearly grants an eid power regarding *shevuah*. The question is whether that power is one-directional or symmetrical.

### Does “*Kam LeShevuah*” Mean Only to Obligate?

One can challenge the Maharam’s proof. The Gemara teaches that an *eid echad* is “*kam leshevuah*.” Perhaps that means only that he can obligate a *shevuah*. Where is the proof that he can also remove one?

If the eid’s function is merely to create a *safek*, the distinction is understandable. One eid against the defendant creates uncertainty and therefore obligates him to swear. But why should one eid in his favor be sufficient to resolve a *safek* that already exists? The power to generate a *shevuah* does not necessarily imply the power to eliminate it.

The Maharam’s answer, however, is that the same feature that obligates the *shevuah* should also exempt from it. If the *shevuah* demands a particular level of *birur*, and an *eid echad* is sufficiently significant to create that demand, then an *eid echad* supporting the defendant can supply the needed *birur*. The very reason the first eid obligates is the reason the second eid exempts.

This is expressed through the *kal vachomer*: if an *eid echad* can weaken the *muchzak* and impose a *shevuah* upon him, he should certainly be able to strengthen the *muchzak* and remove the *shevuah* (Rosh, Bava Metzia 1:3).

### The Unique Problem in Our Sugya

Yet the case of the two buyers is more complicated. The seller does not merely testify about an isolated fact relevant to the oath. He says that one buyer is correct and the other is not. His testimony concerns the ownership of the item itself.

How can we say that his testimony removes the oath from one buyer, imposes an oath upon the other, and nevertheless leaves the property divided between them?

If we truly believe the seller’s testimony as monetary *ne’emanus*, then we should follow it completely. The buyer whom he identifies should receive the item. If we do not believe him, why should his statement affect the *shevuos* at all? It appears inconsistent to believe the eid for the purpose of *shevuah* while disregarding his testimony in the division of the money or object.

This difficulty is especially strong if *eid hamesaye’a* works by supplying *ne’emanus*. Either the eid is accepted or he is not. One cannot accept his account halfway.

But if *eid hamesaye’a* operates directly upon the *shevuah*, the structure is different. The eid is not being accepted as sufficient proof to award the money. He is being used only within the limited jurisdiction that the Torah granted an *eid echad*: the realm of *shevuah*. In that realm, he can obligate one party and exempt the other, even though he cannot determine the monetary ownership.

This may be the key to Rabbeinu Tam. The seller’s testimony is not believed for money; it is effective for *shevuah*. Thus, the property can still be divided while the oath obligations are altered.

### Why Rashi May Accept *Eid Hamesaye’a* Elsewhere

The difficulty in our sugya does not prove that Rashi rejects *eid hamesaye’a* in every case. It may prove only that this case is different.

Ordinarily, an *eid hamesaye’a* can remove a *shevuah* without requiring Beis Din to accept his testimony as a complete determination of the money. He functions within the laws of *shevuah*. Here, however, the eid’s statement directly identifies which claimant owns the disputed item. If we use his testimony as *ne’emanus*, it seems impossible to stop halfway: either accept him and award the item accordingly, or do not accept him.

Rashi may therefore agree that an *eid hamesaye’a* generally exempts, but refuse to explain this sugya that way. Since the seller’s testimony cannot be accepted for the *shevuah* while ignored for the division, Rashi instead invokes the distinct *ne’emanus* of *baal hamekach*. That status allows the seller’s role to be defined within the transaction itself.

This answers Rabbi Akiva Eiger’s inference. Why did Rashi not use Rabbeinu Tam’s explanation? Not necessarily because he rejects *eid hamesaye’a*. Perhaps he holds that *eid hamesaye’a* is inapplicable in this unusual configuration, where the same testimony speaks directly to the ownership being divided.

### The Range of Positions

We can now appreciate the range of *shittos* among the Rishonim.

One approach accepts *eid hamesaye’a* broadly, including Torah *shevuos*. This is the expansive position of the Maharam MiRotenburg.

Another approach accepts it only for a rabbinic oath, or specifically for the oath in our Mishnah.

A third approach may accept it generally but exclude particular oaths whose purpose is independent of ordinary evidentiary *birur*.

A fourth may deny the rule entirely, understanding that an *eid echad* can obligate a *shevuah* but cannot exempt from one.

And Rashi may occupy a subtler position: he may accept the principle in general, yet not use it in the two-buyers case because the seller’s testimony cannot coherently affect only the *shevuah* while leaving the monetary division untouched.

### Returning to the Mishnah: *Metzi’ah* and *Mekach UMemkar*

The Gemara explains why the Mishnah needed to teach both a found object and a disputed sale. Had it taught only *metzi’ah*, we might have said that the Chachamim imposed a *shevuah* because the claimant rationalizes his seizure: **“חבראי לאו מידי חסר בה”**—the other person loses nothing, since the object came to him without cost. He is *moreh heter* and permits himself to take half.

But in *mekach u’memkar*, where each buyer paid money and the other plainly suffers a loss, perhaps there is no such *moreh heter* and therefore no need for a *shevuah*. The Mishnah teaches that the oath applies there as well (Bava Metzia 2b).

Rashi carefully explains the rationalization in each case. The next question is what role that rationalization plays. Why does the presence of *moreh heter* generate a *shevuah*? And if both cases ultimately require a *shevuah*, what precisely did the two clauses teach us?

### Is *Moreh Heter* the Reason for the *Shevuah*?

The Gemara repeatedly emphasizes that each claimant may be *moreh heter*—he may rationalize his conduct and convince himself that taking half is permissible. But the first question must be: so what? Why should the existence of *moreh heter* create a *shevuah*?

Tosafos appears to understand that this is precisely why the Chachamim imposed the oath. In *metzi’ah*, the claimant tells himself that the other person loses nothing because the object came to him for free. Therefore, he may seize it and demand half. The *shevuah* is imposed **“כדי שיפרוש”**—so that he will withdraw if his claim is not true (Tosafos to Bava Metzia 2b, s.v. **אי תנא מציאה**).

Rashi, however, explains the forms of *moreh heter* without explicitly stating what role they play in the *chiyuv shevuah*. We must therefore determine how Rashi understands the *shakla vetarya*.

### Two Ways to Read the Gemara’s Conclusion

The Gemara says that both *metzi’ah* and *mekach u’memkar* had to be taught. Had the Mishnah taught only one, we might have believed that only that case requires a *shevuah* because it contains a particular rationalization. The second case teaches that a *shevuah* applies there as well.

There are two possible readings of this conclusion.

The first is that *moreh heter* remains essential. The Gemara’s conclusion is that both cases contain *moreh heter*. *Metzi’ah* has one rationalization, and *mekach u’memkar* has another. Since each claimant can persuade himself that he is acting properly, each case requires a *shevuah*.

The second reading is that the Gemara rejects the need for *moreh heter*. The *hava amina* was that only a case of *moreh heter* requires an oath. By teaching a second case, the Mishnah reveals that the oath does not depend upon that factor. Whenever a genuine *safek* remains, a *shevuah* may be necessary.

According to the first reading, the two clauses establish that both situations satisfy the prerequisite of *moreh heter*. According to the second, each additional clause disproves the assumption that *moreh heter* is the basis of the oath.

The Gemara can therefore be read in two opposite ways. Either the *maskanah* preserves *moreh heter* and shows that it exists in both cases, or the *maskanah* teaches that the oath is fundamentally driven by the *safek* and does not require *moreh heter* at all.

Rashi does not explicitly decide the question. Tosafos is clearer: the rationalization is what makes the oath effective, because the claimant who has persuaded himself that he may take the object may still withdraw when forced to swear.

But that itself requires explanation. Why should a *shevuah* be imposed only where a person is *moreh heter*? If there is a *safek*, should not the *safek* itself require clarification?

### Why the Oath May Be Needed Even Though the Division Is Already Determined

The difficulty becomes sharper in *shnayim ochazin*. Each claimant is physically holding the disputed object, and the rule is that each receives half. In a sense, the *chalukah* is already grounded in their respective *muchzak* status. Each one is *muchzak* in the portion that he receives.

If so, the *shevuah* may not be needed to decide the monetary *safek*. The division follows from the possession. What, then, is the oath accomplishing?

One possibility is that the oath is directed at the *moreh heter* itself. A claimant may not be consciously lying. He may have constructed a rationalization that allows him to insist upon half. By requiring him to swear, Beis Din forces him to clarify his own claim. He must stop, think again, and determine whether he is truly certain.

Under this approach, the *shevuah* is not a *birur* of the external *metzius*. It is a test of the claimant’s *ta’anah*. Every *muchzak* requires a *ta’anah*. Possession without a valid claim cannot automatically sustain a right to the property. The *moreh heter* creates concern that the *ta’anah* is weak, imprecise, or not fully sincere. The *shevuah* strengthens and authenticates it.

The oath therefore says: you may receive the half in which you are *muchzak*, but only after you demonstrate that your claim is clear enough for you to swear upon it.

### The Alternative: The *Shevuah* Clarifies the *Safek*

A second possibility is that the *shevuah* is indeed directed at the underlying *safek*. Even though the practical *chalukah* follows from the two claimants’ possession, the ownership remains unresolved. The oath serves as the *birur* required before Beis Din allows each party to retain his half.

According to this model, *moreh heter* is not the reason for the oath. The *safek* is the reason. The question is then why the Gemara spends so much effort identifying the rationalization in each case.

This returns us to the two readings of the Gemara. Perhaps the *maskanah* is that both cases truly require *moreh heter*, because the *shevuah* is designed to correct the weakness in the claimant’s *ta’anah*. Or perhaps the *maskanah* is that *moreh heter* is not essential and the *safek* alone creates the need for *shevuah*.

The text of Rashi must be examined carefully. Rashi explains what the rationalization is, but does not yet state whether the rationalization creates the oath, permits the oath, or merely explains why the oath will be effective.

That is the next stage of the sugya. We cannot be satisfied with the words “he is *moreh heter*.” We must ask what legal role those words play.

### The Rashba: *Moreh Heter* Is Not the Reason, but the *Heter*

There is another way to formulate the entire sugya. *Moreh heter* may not be the reason for the *shevuah* at all. It may be the factor that permits Beis Din to administer the *shevuah*.

Ordinarily, if a person is suspected of deliberate monetary dishonesty, a serious question arises: **חשיד אממונא חשיד אשבועתא**—if he is suspected regarding money, should he not also be suspected regarding an oath? Why would Beis Din place a *shevuah* before someone whom we believe may knowingly swear falsely?

The answer is that the claimant is not necessarily a deliberate thief. He is *moreh heter*. He has rationalized his conduct and convinced himself that he is entitled to the property. Therefore, he is not treated as someone who knowingly steals and would knowingly swear falsely. The *shevuah* can now be used to force him to reconsider.

According to this understanding, the *safek* is the reason for the oath. *Moreh heter* is only the *heter* to impose it.

That is the formulation reflected in the Rashba’s reading of Rashi. The legal sequence is:

First, there is a monetary *safek* that requires a *shevuah*.

Second, one might object that a claimant suspected of taking money improperly is also unfit to be trusted with an oath.

Third, the Gemara explains that he is *moreh heter*. He is not consciously violating the prohibition. Therefore, the concern of *chashud ashevuasa* does not prevent Beis Din from administering the oath (Rashba to Bava Metzia 2b).

### The Difference from Tosafos

Tosafos sounds different. Tosafos states that because the claimant is *moreh heter*, the Chachamim imposed a *shevuah* **כדי שיפרוש**—so that he will withdraw. There, the rationalization explains the positive purpose of the oath. The *shevuah* is designed to break through his self-justification.

According to the Rashba’s reading, by contrast, the oath is needed because of the *safek*. *Moreh heter* does not generate the oath; it removes the objection to using it.

This distinction is exact:

*Moreh heter* may be the *ta’am* of the *shevuah*—the reason it was created.

Or *moreh heter* may be the *heter* of the *shevuah*—the reason it is permissible and meaningful to administer it.

The Gemara’s discussion can now be understood accordingly. In both *metzi’ah* and *mekach u’memkar*, Beis Din needs a *shevuah* because the claim remains unresolved. The Gemara identifies the rationalization in each case in order to show that the claimant is not necessarily a conscious liar and can therefore be confronted with an oath.

We can now return to Rashi’s words and test whether this is indeed his understanding.

### The Wording of the Gemara Favors Tosafos

The Gemara’s language is: **“רמו רבנן שבועה עליה משום דמורי ואמר”**—the Rabbanan imposed a *shevuah* upon him because he rationalizes and says that the other party loses nothing (Bava Metzia 2b).

Read simply, this sounds exactly like Tosafos. The Chachamim imposed the oath because of the *moreh heter*. The words **“משום דמורי ואמר”** provide the reason for the *takanah*. Since the claimant may rationalize his seizure, the Rabbanan require him to swear so that he will withdraw if he is not truly entitled.

According to the Rashba’s approach, however, the relationship must be explained differently. *Moreh heter* is not the reason for the *shevuah*. The *safek* requires the *shevuah*. *Moreh heter* merely answers the objection that a person suspected of monetary dishonesty should also be suspected regarding an oath.

The Gemara would then mean: the Rabbanan were able to impose a *shevuah* because he is *moreh heter*. He is not classified as a deliberate thief, and therefore the principle of **חשיד אממונא חשיד אשבועתא** does not prevent the oath.

That reading is possible, but it is less direct. The words appear to say that the Chachamim imposed the *shevuah* because of the rationalization, not merely that the rationalization removed an obstacle to an independently necessary oath.

### The Difference Between Why and How

This is the precise distinction.

According to Tosafos, *moreh heter* answers: Why did the Rabbanan institute this oath?

According to the Rashba, *moreh heter* answers: How were the Rabbanan able to institute this oath despite the concern of *chashud amamona*?

The first is the *ta’am* of the *takanah*. The second is the condition that makes the *takanah* viable.

If a person were a deliberate liar and thief, the question would not merely be whether the oath is effective. There would be a fundamental problem administering it. If he is *chashud amamona* and therefore *chashud ashevuasa*, the oath cannot function as an ordinary *birur*.

The Rashba therefore reads the Gemara as addressing the moment of enactment. The Chachamim considered the concern that the claimant might be dishonest. They nevertheless imposed the *shevuah* because his conduct may arise from *moreh heter* rather than conscious theft.

Still, the natural syntax remains more compatible with Tosafos: “the Rabbanan imposed a *shevuah* because he is *moreh heter*.” That sounds like a reason for the oath itself.

The strength of the Rashba’s reading must therefore come from Rashi’s exact formulation. If Rashi describes *moreh heter* in a way that specifically removes the status of deliberate dishonesty, then the Rashba’s interpretation becomes compelling despite the less obvious wording of the Gemara.

### The Rashba’s Question Is More Fundamental

According to Tosafos, the Gemara asks why the Chachamim created the *shevuah*. The answer is that the claimant is *moreh heter*, and the oath is needed **כדי שיפרוש**.

According to the Rashba, the question is more fundamental. It is not merely, “Why did the Chachamim enact this oath?” It is, “How can this person swear at all?” If the very suspicion that generates the oath establishes that he may be stealing, then the rule of *chashud amamona* threatens the entire procedure.

The Gemara later discusses whether one who is suspected regarding money is also suspected regarding a *shevuah* (Bava Metzia 5b). If the answer were that such a person cannot be trusted to swear, the Mishnah’s oath would appear impossible. A person who cannot swear would not simply remain exempt; in contexts of a Torah *shevuah*, the rule may become **מתוך שאינו יכול להישבע משלם**—one who is obligated to swear but cannot do so must pay.

Thus, before discussing the reason for the rabbinic enactment, the Rashba must explain how an oath can exist in this case at all.

The answer is *moreh heter*. The claimant is not necessarily consciously stealing. He believes that his seizure is justified. Therefore, he is not included in the category of one who is deliberately *chashud amamona*. The oath can function.

### Why the Gemara Mentions the Rabbanan

The Gemara says that the Rabbanan imposed the *shevuah*. According to Tosafos, this is straightforward: the Rabbanan instituted it because the claimant rationalizes his conduct.

According to the Rashba, the reference to the Rabbanan means that when they created the *takanah*, they accounted for the concern of *chashud amamona*. They were able to impose the oath because the claimant’s conduct can be understood as *moreh heter* rather than intentional theft.

The logical order is therefore reversed.

Tosafos: *moreh heter* creates the need for a *shevuah*.

The Rashba: the *safek* creates the need for a *shevuah*, and *moreh heter* removes the disqualification that would prevent it.

This explains why the same words can support two very different structures. **“רמו רבנן שבועה עליה משום דמורי ואמר”** may mean that the rationalization is the positive reason for the oath. Or it may mean that because the conduct is only a rationalization, the Rabbanan could impose the oath without treating the claimant as one suspected of knowingly swearing falsely.

The wording leans toward Tosafos, but the conceptual problem of *chashud amamona* gives force to the Rashba. We must now see whether Rashi’s language identifies the claimant as a conscious taker or as someone who genuinely believes he is acting within his rights.

### Rashi and Tosafos Define *Moreh Heter* Differently

Rashi writes: **“מורה היתר לעצמו לאחוז בה בלא משפט”**—he permits himself to take hold of it without *mishpat* (Rashi to Bava Metzia 2b, s.v. **דמורה ואמר**).

Tosafos writes differently. The claimant seizes the object even though he knows that his fellow found it, because he says that the other person loses nothing: **“לכך תופס אע״ג שיודע שחבירו מצאה”** (Tosafos to Bava Metzia 2b, s.v. **אי תנא מציאה**).

These are not merely two expressions of the same idea.

Tosafos describes a person who knows that the other claimant found the object. He nevertheless takes it because he rationalizes that his fellow did not pay for it and therefore suffers no true loss. The *moreh heter* is a justification for taking something that, on the facts as he understands them, belongs to the other person.

Rashi’s phrase **“בלא משפט”** suggests something else. The claimant is not necessarily permitting himself to steal. He believes that he himself may be right. His fault is that he seizes the object without a *din*, without a judgment establishing that his claim is correct.

He says, in effect: “I believe it is mine, so I am entitled to grab it.” But no Beis Din has ruled in his favor. No *mishpat* has established his right. His *moreh heter* is not permission to take another person’s property; it is permission to enforce his own uncertain claim without adjudication.

### The *Nafka Mina*

According to Tosafos, the claimant may be rationalizing an act that is objectively theft. That rationalization creates the need for a *shevuah*. The oath forces him to confront what he is doing and withdraw.

According to Rashi, as understood by the Rashba, the claimant does not see himself as stealing at all. He believes his own claim. Therefore, the concern of *chashud amamona* is removed. He is not a conscious thief who cannot be trusted to swear. The *shevuah* can now serve as a *birur* of the *safek*.

This is a powerful *diyuk* in Rashi. He does not merely say that the claimant permits himself to seize. He adds **“בלא משפט.”** The defect is taking the law into his own hands before his right has been established.

That language fits the Rashba’s structure. *Moreh heter* is not the reason for the oath. It explains why the claimant is not classified as deliberately dishonest and why Beis Din can administer an oath.

Tosafos, by contrast, explicitly describes the rationalization as the reason the person seizes despite knowing that his fellow found the object. The *shevuah* is imposed to make him stop.

We now have two coherent readings of the sugya, each rooted in the exact words of a Rishon.

### What **“בלא משפט”** Excludes

The words **“בלא משפט”** must be taken seriously. Rashi does not describe a person who knows that the object belongs to his fellow and nevertheless permits himself to steal it. He describes a person who takes possession without a *mishpat*—without a *din Torah* or a ruling establishing that the object is his.

The claimant believes that he may have been the first to find it. He believes that his own account may be correct. His rationalization is: “Since I think it is mine, I may seize it now. Why must I first go to Beis Din?” That is taking **“בלא משפט.”** The wrongdoing lies in deciding the case for himself.

Tosafos describes a more extreme rationalization. The claimant may know that his fellow found the object, yet say that the other party loses nothing because the object came to him without payment. He therefore takes it despite knowing the facts. The Chachamim imposed a *shevuah* so that this kind of self-serving rationalization would not permit every person to seize another’s garment and declare, “It is mine” (see Bava Metzia 5b).

According to Tosafos, the *moreh heter* can therefore coexist with an act that is objectively theft. The rationalization explains why a *shevuah* may cause him to withdraw. He may take money under a distorted *heter*, but he may still be unwilling to swear falsely.

According to Rashi, as understood by the Rashba, that explanation is insufficient. If the claimant knowingly stole, he would remain *chashud amamona*. Merely saying that he rationalized the theft would not erase the fact that he took another person’s property. The concern of *chashud ashevuasa* would remain.

Rashi therefore defines the case differently. The claimant does not know that he is wrong. He believes that he may be right, but he acts before the matter has been adjudicated. His *moreh heter* is not, “I am permitted to steal.” It is, “I am permitted to enforce my own uncertain right without waiting for *mishpat*.”

That is precisely why the *shevuah* can be administered. Since he is not classified as a deliberate thief, the oath can force him to clarify whether his *ta’anah* is truly certain. The *shevuah* confronts his unauthorized self-adjudication and demands a level of certainty that mere seizure did not require.

The difference between Rashi and Tosafos is therefore not a minor difference in wording. It reflects two entirely different understandings of the claimant, the *moreh heter*, and the function of the oath.

### Two Ways to Address *Chashud Amamona*

We can now formulate the disagreement more precisely.

Rashi, according to the Rashba, removes the claimant from the category of *chashud amamona* altogether. He did not knowingly take another person’s property. He believed that the object might be his and acted without waiting for Beis Din. His conduct was improper, but it does not establish deliberate monetary dishonesty. Therefore, there is no basis to suspect that he will knowingly swear falsely.

Tosafos can take a different route. Even if the claimant knowingly seized an object that his fellow found, that does not necessarily prove that he would take a false *shevuah*. The Gemara’s conclusion is that **חשיד אממונא לא חשיד אשבועתא**—one who is suspected regarding money is not automatically suspected regarding an oath (Bava Metzia 5b).

On this approach, *moreh heter* does not have to erase the objective act of theft. It explains why the act does not demonstrate a willingness to swear falsely. A person may rationalize a monetary seizure while still fearing a *shevuah*. The oath therefore remains an effective means of forcing him to withdraw.

The two approaches address different points in the chain.

Rashi says: he is not truly *chashud amamona*, because he believes that the claim may be his and merely acted **בלא משפט**.

Tosafos says: even if he is *chashud amamona*, that suspicion does not establish that he is *chashud ashevuasa*.

This distinction explains why Tosafos can describe the claimant as knowing that his fellow found the object and still retain the *shevuah*. The oath is not invalidated merely because he acted wrongly with money. His distorted monetary reasoning does not necessarily extend to a false invocation of Hashem’s Name.

Rashi, however, needs the claimant’s conduct itself to remain short of conscious theft. If the entire purpose of *moreh heter* is to make the *shevuah* possible by removing the *chashud* status, a rationalization for actual stealing would not suffice. The claimant must genuinely believe that he has a possible right to the object.

Thus, **“בלא משפט”** means that he bypassed adjudication, not that he knowingly overrode ownership. He decided the *safek* for himself. The *shevuah* now compels him to return to the question he evaded: Are you truly certain enough to swear that the object is yours?

### The *Nafka Mina*: **“אני ארגתיה”**

The practical difference appears in a case where the claims themselves establish that one party is certainly lying. Each litigant says, **“אני ארגתיה”**—I wove the garment. Both statements cannot be true. There is a *vadai ramai*.

The Rashba explains that according to Rashi’s approach, such a case is not governed by the ordinary rule of *shnayim ochazin*. Since there is certainly a liar and no plausible *moreh heter*, the property remains deposited until Eliyahu comes: **יהא מונח עד שיבא אליהו**. This, the Rashba writes, is the consequence of Rashi’s *shittah* (Rashba to Bava Metzia 2b).

Why can the parties not divide with a *shevuah*? Because the factor that made the Mishnah’s oath possible is absent. One claimant knowingly fabricated his story. There is no uncertain self-adjudication and no **“בלא משפט”** based upon a possible right. The concern of *chashud amamona* and *chashud ashevuasa* can no longer be removed through *moreh heter*.

Tosafos states the opposite. Even where each one says **“אני ארגתיה,”** and it is certain that one of them is lying, they may still divide with a *shevuah*. Tosafos explains that **חשיד אממונא לא חשיד אשבועתא**: suspicion of monetary dishonesty does not automatically disqualify a person from swearing (Tosafos to Bava Metzia 2b, s.v. **אי תנא מציאה**).

This dispute reveals how the *maskanah* of the Gemara is understood.

If *moreh heter* remains necessary in the conclusion, then the oath exists only where the claimant’s conduct can be explained without classifying him as a deliberate liar. That is the Rashba’s reading of Rashi. The two cases of the Mishnah each contain a form of *moreh heter*, and that is why the *shevuah* can be administered.

If the Gemara ultimately holds that *moreh heter* is not required, the *safek* itself can generate the *shevuah*. Even a *vadai ramai* does not destroy the procedure, because the halachah is that one who is suspected regarding money is not necessarily suspected regarding an oath. That is the direction of Tosafos.

The case of **“אני ארגתיה”** is therefore not an incidental application. It exposes the entire structure of the sugya. Is *moreh heter* indispensable because it removes the claimant from the category of deliberate dishonesty? Or is the oath available even without it because monetary suspicion and oath suspicion are separate?

This also clarifies Rashi’s ruling of **יהא מונח**. The reason is not merely that division is inappropriate where the garment was not produced jointly. The deeper problem is that the *shevuah* cannot function where one party is certainly lying and no *moreh heter* exists.

### When the *Shevuah* Fails, the *Chalukah* Fails

Tosafos and the Rashba focus upon different parts of the problem. Tosafos addresses the *shevuah* in a case of *vadai ramai*. Even though one claimant is certainly lying about the money, Tosafos maintains that the parties can swear, because **חשיד אממונא לא חשיד אשבועתא**. The monetary dishonesty does not automatically establish that the liar will swear falsely.

The Rashba’s reading of Rashi begins from the opposite premise. In a case of *vadai ramai*, the oath cannot be administered. There is no *moreh heter* to remove the concern of *chashud amamona* and *chashud ashevuasa*.

Once the *shevuah* is unavailable, the rule of *yachloku* is unavailable as well. The Mishnah does not award each claimant half independently of the oath. Its ruling is **יחלוקו בשבועה**—a division secured by *shevuah*. The oath is part of the mechanism that permits the *chalukah*.

Therefore, the inability to administer the *shevuah* does not merely remove an additional safeguard while leaving the division intact. It undermines the *chalukah* itself. Where there is a *vadai ramai* and no valid *shevuah*, the object must remain deposited: **יהא מונח עד שיבא אליהו**.

This is the Rashba’s understanding of Rashi. The decisive point is not simply that one claimant is certainly lying. It is that certainty makes the *shevuah* impossible; and without the *shevuah*, there can be no *yachloku*.