The **Gemara** continues its analysis of the concluding section of our **Mishnah**, which discusses a specific case where a person claims, "Your father owned this field, but then he sold it to me." We learned that even **Rabbi Yeshua** would consider such a person credible. This ruling is based on the principle of "the same mouth that permitted is the same mouth that forbade" (Pesha Asar, Pesha Yatir), meaning that the very statement that establishes the father's prior ownership (which would forbid the claimant from taking the field) is immediately followed by a statement that permits the claimant to own it (that the father sold it to him). The underlying logic here is a "since he could have said" (migu) argument: since the claimant could have simply remained silent or denied the father's ownership entirely, the fact that he voluntarily offered the information about the father's ownership, only to follow it with his own purchase, lends credibility to his entire statement.
On the previous page, the **Gemara** questioned why the **Mishnah** found it necessary to present this particular case. Could it not have offered a simpler scenario to convey the same principle? The **Gemara** initially explained that the latter part of the **Mishnah** (Sefa) would not fit in with another case. Now, the **Gemara** attempts to offer an alternative interpretation of what the **Mishnah** could have stated to bring out the same point.
The **Gemara** suggests a straightforward case: a person tells his friend, "Listen, I borrowed a hundred from you, and I paid you back." In this scenario, the person should be believed, as the principle of "the same mouth that permitted is the same mouth that forbade" (Pesha Asar, Pesha Yatir) applies. There is no external claim against him; he is offering this information voluntarily. Since he could have remained silent and denied the debt entirely, his voluntary admission of the loan followed by his claim of repayment should grant him full credibility, even without an oath, as this is a Torah-level ruling. The **Mishnah** would thus be teaching the same concept: a person who establishes a fact (the loan) and then immediately modifies it (the repayment) is believed, due to the "since he could have said" (migu) logic.
However, the **Gemara** rejects this proposed case, stating that it would not align with the latter part of the **Mishnah** (Sefa). The **Mishnah**'s Sefa describes a situation where the lender brings witnesses to prove that a loan indeed occurred. In such a case, the **Mishnah** rules that the borrower is *not* believed when he claims to have paid back the loan. This is because the initial establishment of the loan comes from the witnesses, not from the borrower himself, thus negating the "same mouth" principle. The **Gemara** argues that this ruling in the Sefa is problematic. According to Jewish law, a person who borrows money in front of witnesses does not necessarily have to repay it in front of witnesses. Therefore, even if witnesses confirm the loan, the borrower *should* be believed when he claims to have paid it back, as he is not required to provide witnesses for the repayment. Thus, the proposed case does not fit the **Mishnah**'s Sefa.
The **Gemara** then offers another alternative case for the **Mishnah**: "I owed your father a hundred, and I paid him back half." This is a classic case of partial admission (Modeh Bemiksat). The novel point (Hadush) here would be that the borrower is believed without even needing to take an oath. Normally, if someone claims a hundred and the defendant admits to owing only fifty, the defendant must take an oath that he only owes fifty. However, in this proposed **Mishnah** case, because the borrower is voluntarily offering the information—"since no one claimed you" (Shul Shakut Al-Farekha)—he would not need an oath. **Ashi** supports this, arguing that this case is superior to the **Mishnah**'s original case because it teaches an additional novel point: a partial admission that does not require an oath.
The **Gemara** rejects this proposal as well, stating that it would not align with the opinions of any of the sages (Tannaim). This is a point of **dispute** (Makhloket) among the **Tannaim**. According to **Rabbanan**, in a case like this, it is considered like "returning a lost object" (Mishiv Avedah). Their logic is that a person is generally not brazen enough to deny a loan entirely to his direct creditor. However, when the claim comes from the creditor's son (who was not the original lender), the borrower could easily deny the entire debt without shame. Therefore, if he admits to any part of the debt, it's as if he's voluntarily returning a lost object, and he is exempt from an oath. Thus, **Rabbi Yeshua**'s ruling that no oath is needed, even when there was a claim, would fit **Rabbanan**'s view. Conversely, **Rabbi Eliezer ben Yaakov** holds that an oath *is* required even in such a case. Since **Rabbi Yeshua**'s ruling in the **Mishnah** implies that an oath is *not* needed when the person volunteers the information, it doesn't fit with **Rabbi Eliezer ben Yaakov**'s view, nor does it fully align with **Rabbanan**'s (who would exempt even if there was a claim).
A **Baraita** is then cited to clarify the **dispute** (Makhloket) between **Rabbanan** and **Rabbi Eliezer ben Yaakov**. The **Baraita** states that there are times when a person must take an oath even on his own admission (Ta'anat Atzmo). For example, if a person says to his friend, "I had a hundred of your father's money by me, and I paid him back half," **Rabbi Eliezer ben Yaakov** says he must swear that he paid half. **Rabbanan**, however, say it is like "returning a lost object" (Mishiv Avedah) and he is exempt from an oath. This **Baraita** confirms the **dispute** regarding partial admission, even when the statement is initiated by the borrower.
The **Gemara** initially struggles with **Rabbi Eliezer ben Yaakov**'s position, as it seems to contradict the principle that one should not be compelled to make an oath on a self-initiated admission, especially if it discourages people from returning funds. The **Gemara** therefore reinterprets the **Baraita**'s case for **Rabbi Eliezer ben Yaakov**. It suggests that the **Baraita** refers to a situation where a minor (Katan), an orphan, makes a certain claim (Ta'ana Bari) against the borrower, saying, "You borrowed money from my father and did not pay him back." In this case, the borrower admits to the loan but claims partial repayment. Here, **Rabbi Eliezer ben Yaakov** would require an oath. The reason it's still considered "his own admission" (Ta'anat Atzmo) is because a minor's claim is not strong enough to compel an oath, so the borrower's admission is effectively voluntary. However, the **Gemara** immediately questions this: a minor cannot cause someone to take an oath! The **Gemara** answers that "minor" (Katan) in this context actually refers to an adult (Gadol) son. He is called a "minor" because he is not fully familiar with his father's financial dealings. This means the case is one where an adult son claims the debt, and the borrower makes a partial admission. The **Gemara** then asks why this is considered "his own admission" (Ta'anat Atzmo) if he was claimed by an adult son. This is a standard case of partial admission (Modeh Bemiksat), which always requires an oath by Torah law. What novel point is **Rabbi Eliezer ben Yaakov** teaching?
The **Gemara** returns to the original interpretation of the **Baraita**'s case for **Rabbi Eliezer ben Yaakov**: it *is* a minor (Katan) making the claim. To resolve the issue of a minor not being able to compel an oath, the **Gemara** delves into **Rabbah**'s underlying logical reasoning (Sefara) for why the Torah requires an oath for partial admission. **Rabbah** explains that a person is not brazen enough to deny a loan entirely to his direct creditor. If he denies only part of the debt, it's often a stalling tactic; he might intend to pay the full amount but lacks the funds at the moment. The Torah imposes an oath to force him to admit the full truth and prevent such delays.
With **Rabbah**'s principle, the **dispute** (Makhloket) between **Rabbi Eliezer ben Yaakov** and **Rabbanan** becomes clear. **Rabbi Eliezer ben Yaakov** holds that this principle—that a person is not brazen before his creditor—applies universally. Therefore, whether the claim comes directly from the lender or from his son, the borrower is still considered to be acting with some degree of brazenness if he partially denies the debt, and thus an oath is required. **Rabbanan**, however, distinguish: the "not brazen" principle only applies when the direct creditor (the one who lent the money) makes the claim. When the son claims, the borrower is not ashamed to deny the entire debt, as the son was not the original lender. Therefore, any admission he makes is considered a voluntary act, like "returning a lost object" (Mishiv Avedah), and no oath is required. This is to avoid discouraging people from returning funds they could have otherwise denied entirely.
Now, we return to the **Gemara**'s original question: why didn't the **Mishnah** use the case of "I owed your father a hundred, and I paid him back half" to illustrate the principle of "the same mouth that permitted is the same mouth that forbade"? While **Rabbi Eliezer ben Yaakov** might agree that if the borrower *voluntarily* offers this information (without any claim being made against him), he would be believed without an oath, the **Mishnah** specifically chose its original case (the field sale) to convey the unique mechanism of "the same mouth that permitted is the same mouth that forbade" (Pesha Asar, Pesha Yatir). This principle relies on the fact that the person's *own statement* is the source of both the initial establishment and the subsequent modification. The "returning a lost object" (Mishiv Avedah) case, while also involving credibility, operates on a different logical principle. Therefore, the **Gemara** concludes that the **Mishnah**'s chosen case was necessary to teach its specific point.
We now turn to a new **Mishnah** that discusses the validation of a document (Shtar). A document with witnesses must be validated before it can be used for payment or other legal purposes. There are three primary methods for validating a document: first, the witnesses themselves can come and confirm their signatures; second, other witnesses can testify that they recognize the signatures; or third, a **Bet Din** (court) can compare the signatures on the document to those on another already validated document.
The **Mishnah** presents two cases. In the first case (Risha), the witnesses themselves come and confirm, "Yes, that is our signature." However, they immediately add, "but we did not see any transaction," or "we signed under duress," or "we were minors (Katan) at the time," or "we were otherwise disqualified (Pasul) (e.g., relatives to the litigants, or gamblers)." In this scenario, the **Mishnah** rules that the witnesses are believed. The logic is again "the same mouth that permitted is the same mouth that forbade" (Pesha Asar, Pesha Yatir). Since the document's validity relies solely on their testimony that it is their signature, they are also believed when they immediately qualify or invalidate that testimony. They could have remained silent, preventing the document from being validated at all. Therefore, their combined statement, even if it incriminates them, is accepted.
In the second case (Sefa), the document was validated by other means—either by other witnesses recognizing the signatures or by the **Bet Din** comparing them to another document. *After* the document has been validated by these external means, the original witnesses come forward and make the same claims: "we signed under duress," "we were minors," or "we were disqualified." In this case, the **Mishnah** rules that they are *not* believed. The reason is that they are no longer the ones establishing the document's validity; it has already been established by other sources. They do not have the "same mouth" principle working in their favor, and their attempt to invalidate the document is seen as a separate, uncorroborated claim.
**Rami Bar Chama** offers a qualification to the **Mishnah**'s ruling in the Sefa. He states that the witnesses are *not* believed when they claim duress *only* if they claim "we signed under duress because of money." In such a situation, they are essentially admitting to being false witnesses (Eid Sheker) for financial gain, which makes them wicked (Rasha). A person is not believed when they incriminate themselves in this manner. However, **Rami Bar Chama** continues, if they claim "we signed under duress because our lives were threatened" (Pikuah Nefesh), they *are* believed, even in the Sefa where the document was validated by others. This is because "nothing stands before life-threatening danger" (Eindabar Gomed Befnei Pikuah Nefesh), and signing under such circumstances does not make one wicked; it is permissible to save one's life.
The **Gemara** questions **Rami Bar Chama**'s statement regarding duress due to life-threatening danger. This seems to contradict the principle of "once you testified" (Kivan Shegid), which states that once a witness has given testimony, he cannot recant it. Signing a document is considered equivalent to giving verbal testimony. How, then, can they be believed to recant their testimony, even if it was under duress? The **Gemara** suggests that perhaps the principle of "once you testified" (Kivan Shegid) only applies to verbal testimony, not to written documents. However, this is rejected: signing a document is considered as if the witnesses were interrogated verbally in a **Bet Din**. Therefore, one cannot recant on a written testimony any more than on a verbal one.
The **Gemara** concludes that **Rami Bar Chama**'s statement must be reinterpreted to apply to the **Mishnah**'s Risha (where the witnesses *are* believed). According to this revised understanding, **Rami Bar Chama** means that the **Mishnah**'s ruling that witnesses *are* believed (due to "the same mouth that permitted is the same mouth that forbade") applies *only* if they claim "we signed under duress because our lives were threatened." In this case, they are uprooting their testimony without making themselves wicked (Rasha), as saving a life is permissible. However, if they claim "we signed under duress because of money," they are *not* believed, even in the Risha where they themselves validated the document. This is because claiming to have signed a false document for financial gain constitutes making oneself wicked, and a person is not believed to incriminate himself in this manner.
Thus, we have two versions (Nosach) of **Rami Bar Chama**'s statement, leading to two fundamental differences: According to the first version, even if a document was validated by external means (Sefa), witnesses can still claim duress for life-threatening danger and be believed, effectively overriding the "once you testified" principle for such extreme cases. However, according to the second version, if the document was validated by external means, the witnesses are *never* believed, regardless of the type of duress, because the "once you testified" principle fully applies. The second difference is that according to the first version, if the witnesses themselves validate the document (Risha), they are believed even if they claim duress for money (due to "the same mouth" principle). But according to the second version, even with "the same mouth" principle, they are *not* believed if they claim duress for money, as this would make them wicked.