The concept of miksat ha-ta'ana refers to a partial admission of a claim. For instance, if one person claims another owes them one hundred units, and the second person admits to owing fifty but denies the remaining fifty, the Torah mandates that the second person must swear an oath regarding the denied fifty units. This oath absolves them from paying the rest.
However, a dispute arises in a specific scenario, known as a case of hilach. This occurs when the debtor admits to owing fifty units and immediately presents those fifty, stating, "Here it is; I never spent it." Rabbi Hayah maintains that even in such a case, the debtor must still swear an oath regarding the remaining fifty units. His reasoning is that the partial admission, even with immediate payment, still constitutes a miksat ha-ta'ana. Conversely, Rav Sheshat argues that if the fifty units are immediately available and were never truly out of the creditor's reach, it is as if the money never left the original owner's possession. Therefore, the discussion is effectively only about the remaining fifty units, which the debtor entirely denies. This situation is classified as kofer kol (a total denial), and a person who entirely denies a claim is not required to swear an oath.
This leads to a fundamental disagreement between Rabbi Hayah and Rav Sheshat regarding a modeh b'miksat (one who partially admits) case where the element of hilach (immediate availability) is present.
We then encounter another halachic principle: ein nishbaim al karkaot—one does not swear oaths concerning land (immovable property). This rule is derived from specific verses in the Torah. Whether a person denies a claim to land (kofer al karka) or admits to owing a certain amount of land (modeh b'miksat karka), oaths are not administered for land.
The Gemara raises a question against Rav Sheshat’s opinion. If Rav Sheshat holds that in any hilach case, one is exempt from an oath, why is a separate verse needed to state that one is exempt from oaths concerning land? Every piece of land is inherently a hilach case; it is always present and cannot be destroyed or lost in the same way movable items can. Therefore, if the principle of hilach exempts one from an oath, the rule of ein nishbaim al karkaot would be redundant.
To resolve this, the Gemara explains that the rule of ein nishbaim al karkaot addresses specific scenarios where the hilach principle might not apply. For example, if someone was given a piece of land and then altered it, perhaps by digging ditches or furrows, it is no longer the "as is" item originally given. In such a case, it is not considered a pure hilach. Without the specific verse stating ein nishbaim al karkaot, one might have thought that an oath would be required for such a modified land claim, as it resembles a modeh b'miksat without the hilach element. The verse teaches us that even in such a scenario, no oath is administered.
Another case where ein nishbaim al karkaot is necessary is when a person claims movable items (kelim) and land (karkaot) from another. If the defendant admits to owing the movable items but denies the land, this is a modeh b'miksat case. Since the land is present, one might assume it falls under hilach, but the denial of the land itself, separate from the admitted movable items, would typically require an oath for the denied portion. The verse therefore clarifies that even in this mixed claim, no oath is taken regarding the land. Thus, the verse regarding ein nishbaim al karkaot addresses two distinct scenarios where the hilach principle alone would not suffice: when the land has been physically altered, or when land is denied in a claim that also involves admitted movable items.
The discussion then shifts to the laws of the four types of guardians (shomrim). A shomer chinam (unpaid guardian) is only liable for negligence (peshiah), such as theft (genevah) or loss (avedah). If the item is stolen or lost, he makes an oath that he was not negligent and is then exempt. A shomer sachar (paid guardian) has greater obligations, being liable even for theft or loss, but is exempt from unavoidable accidents (ones). If an accident occurs, he must swear he was not negligent and is then exempt. A shoel (borrower) is the most obligated, being liable even for unavoidable accidents, except if the item died or broke while actively engaged in the work for which it was borrowed (metah machmat melacha). In such a case, he must swear to that fact to be exempt.
The Torah passage discussing guardians includes the phrase ki hu zeh ("that this is it"). This phrase is interpreted as referring to a modeh b'miksat case, specifically a loan scenario, not a guardianship. A dispute exists whether the rules of modeh b'miksat (derived from ki hu zeh) apply to guardians. One opinion holds that the two sections of the Torah (guardianship and loans) are distinct (Eruv Parashiyot), meaning guardians are not bound by the modeh b'miksat rule. Thus, if a guardian claims the entire item was stolen, he simply swears to that and is exempt. Another opinion, however, maintains that guardians are bound by the modeh b'miksat rule, meaning a guardian only makes an oath if he partially admits to the claim and partially denies it.
Rashi explains what constitutes a modeh b'miksat for a guardian. If a person entrusts three cows to a guardian, and the guardian denies receiving one cow, admits to possessing another, and claims the third was stolen, this is a scenario where the guardian makes an oath. He partially denies (one cow), partially admits (one cow), and partially claims an unavoidable accident (one cow stolen). This is a case of modeh b'miksat, and according to the opinion that applies ki hu zeh to guardians, he would swear.
Rami Bar Chama, however, presents a different case. If the owner claims, "I gave you three cows, and they all died due to your negligence," and the guardian responds, "One, you never gave me (denial); one died due to an unavoidable accident (ones); and one, I am responsible for (admission)," this is a pure modeh b'miksat case without the element of hilach, as all cows are gone. In this situation, the guardian would be required to swear an oath for the cow that died due to ones, as he is claiming exemption for it while admitting responsibility for another and denying a third. This demonstrates that an oath is required when there is a combination of denial, admission, and a claim of exemption for a portion of the items.
The discussion then turns to the opinion of Rabbi Hayah Kamaita, who held that a modeh b'miksat oath could be triggered even through the testimony of witnesses. If a person claims one hundred units, and the debtor denies everything, but two witnesses testify that the debtor owes fifty, Rabbi Hayah would obligate the debtor to swear an oath on the remaining fifty units. The Gemara challenges Rabbi Hayah with a Mishnah that explicitly contradicts this. The Mishnah states that if one claims one hundred, and the debtor denies everything, but witnesses testify that fifty are owed, the debtor is exempt from an oath. The Mishnah derives this from the verse ki hu zeh, interpreting "he" (hu) to mean that the admission must come from the debtor himself, not through witnesses. Rabbi Hayah, a Tanna, could argue with the Mishnah, but not with the Torah verse. The Gemara explains that Rabbi Hayah interprets the verse ki hu zeh as teaching the general law of modeh b'miksat, and he learns the exclusion of witnesses from a different verse (kavah chomet). The opposing view learns from hu zeh that the admission must be personal, excluding testimony by witnesses.
Another distinction is made regarding modeh b'min ha-ta'anah (admission of a different type of claim). If one claims one hundred measures of wheat (chittin), and the debtor admits to owing fifty measures of barley (se'orin), this is not considered a modeh b'miksat that obligates an oath, as the items are different. However, the Rabbi of Afturiki holds that even in such a case, an oath is required, as the underlying value is monetary, regardless of the specific item.
The Gemara then presents a case: a shepherd is given three animals to watch, without witnesses. Later, the owner claims the three animals, and the shepherd denies ever receiving any. Witnesses then testify that the shepherd ate two of the animals. According to Rabbi Hayah, this is a modeh b'miksat via witnesses (as the witnesses establish the shepherd's possession of two animals, while he denies the third), and thus the shepherd should swear. However, the shepherd is a thief (gazlan) for eating the animals, and a thief is not trusted to swear an oath (hashud al ha-mammon, hashud al ha-shevuah – suspected of theft, suspected of false oath). Abaye argues that it is impossible to make such a person swear. Instead, the oath should be shifted to the claimant (galgal shavuah).
The Gemara challenges this, stating that even without Rabbi Hayah's ruling, an oath would be required. According to Rabbi Nachman, even a person who completely denies a claim (kofer kol) is subject to a rabbinic oath called shevuat heset. This oath is designed to deter lying. In the shepherd's case, even if he denies all three cows, and witnesses prove he ate two, he would be considered a kofer kol on the remaining one (or the value of the two he ate). Since he is a thief, he cannot swear this shevuat heset, so it would be shifted to the owner. This implies that Abaye's solution of shifting the oath does not necessarily require Rabbi Hayah's specific ruling.
The Gemara clarifies that Rabbi Nachman's shevuat heset is a rabbinic enactment to deter individuals from casually denying claims. It is based on the assumption that a claim is rarely made without some basis. However, if the shepherd is a known thief, he would not be deterred by a shevuat heset. Therefore, the oath is shifted to the claimant. This involves two rabbinic enactments: first, the shevuat heset itself, and second, the shifting of the oath to the claimant because the original oath-taker is untrustworthy. Such a "double enactment" (takanta le-takanta) is generally not made. Thus, the only way to explain the shifting of the oath in this scenario is if we follow Rabbi Hayah's view that a modeh b'miksat via witnesses requires a Torah-level oath. In that case, the shifting of the oath is only one rabbinic enactment, making it acceptable.
The Gemara then questions the assumption that a shepherd is automatically considered a thief. It is a general rule that a person does not sin unless they derive benefit from it. Shepherds are generally trustworthy with others' animals because they gain no personal benefit from stealing them. However, if witnesses saw the shepherd eat two animals, this specific act makes him a thief, even if he would normally be trusted. Therefore, in this specific case, he is indeed considered a thief and cannot swear an oath.
The discussion returns to a Mishnah concerning two individuals holding a garment (tallit), each claiming it is entirely theirs. The Mishnah states that each must swear that they do not own less than half of it. The Gemara questions the precise meaning of this oath: does one swear about what they possess (a positive claim) or about what they do not possess (a negative claim)? Avuna explains that the oath is "I swear that I have a share in it, and my share is not less than half." This formulation prevents someone who truly has no share, or less than half, from truthfully taking the oath, thereby ensuring the oath serves as a deterrent.
The Gemara asks why the Mishnah doesn't simply have each person swear that the entire garment is theirs. The answer is that if they were to swear to owning the whole thing, and then the court only awarded them half (because the other person also swore), it would create a bad reputation for the court (la'az le-beit din). The court cannot award the whole item when another person is holding half and also claims it.
Why not simply have each person swear, "Half is mine"? This would contradict their initial claim that the entire garment belongs to them. The Mishnah's formulation, "I swear that I do not own less than half," allows them to maintain their original claim (that it's all theirs) while still making a truthful oath if they are entitled to at least half. They are effectively saying, "I own it all, but at the very least, I own no less than half."
The purpose of this oath in the Mishnah is a rabbinic enactment (takana) to deter people from arbitrarily grabbing someone else's garment and claiming it as their own. The Gemara questions this: if someone is willing to steal, wouldn't they also be willing to lie on an oath? The response is that we do not say that one who is suspected of theft is also suspected of making a false oath (migu d'hashud al ha-mammon hashud al ha-shevuah). People are generally more careful about making a false oath than about committing a financial transgression.
This principle is further supported by the explanation of Rava regarding a modeh b'miksat. When someone admits to owing fifty but denies one hundred, they are not necessarily a thief. They might merely be trying to buy time until they can pay the full amount. Since their intention is to pay, they are not considered dishonest to the extent that they would lie on an oath. This distinction is also seen in the rule that one who denies a loan (melaveh) is still considered a valid witness (kasher eidut), because they may simply be trying to buy time. However, one who denies possessing a deposit (pikadon) is disqualified as a witness (pasul eidut), because they have the item and are simply refusing to return it, which is outright theft.
The Gemara then raises several challenges to the idea that one suspected of theft is not suspected of false oath. For example, if a guardian admits to possessing one cow but claims another was stolen, he is denying part of the claim. If he is willing to deny part of the claim, implying he might be stealing, why would he be believed on an oath that the other cow was stolen? The answer is that even in such a case, he might be buying time, hoping to find the stolen cow or compensate for it later. He rationalizes that he is not truly stealing, but merely delaying payment or recovery. Therefore, he is still trusted to make an oath.
A further challenge comes from the case of someone who wants to keep a borrowed item (e.g., a cow) and offers to pay for it instead of returning it. The court requires him to swear that the item is not in his possession, even though he is clearly coveting it and willing to pay to keep it. Why would such a person be trusted on an oath? The explanation is that he rationalizes his action; he doesn't perceive paying for the item as theft, nor does he see himself as violating the prohibition of "do not covet" (lo tachmod) if he intends to pay. Since he doesn't believe he is committing a sin, he is not considered likely to lie on an oath.
Finally, Abaye offers an alternative explanation for the Mishnah's oath in the case of the two people holding a garment. He agrees that the principle is that one suspected of theft is not necessarily suspected of false oath. However, Rabbi Yohanan disagrees with the reason for the oath. Rabbi Yohanan argues that if the purpose was merely to deter arbitrary grabbing, we would not trust such a person to swear. Instead, Rabbi Yohanan suggests that the reason for the oath is that the person who grabbed the garment might genuinely believe that the other person owes them an old debt. In their mind, they are not stealing, but merely recovering what is rightfully theirs. Since they do not perceive their action as a sin, they are considered trustworthy to make an oath. However, the Gemara clarifies that this belief is often a "doubt" (safek) in the person's mind, not a certainty. Therefore, an oath is still required to clarify the situation and ensure justice.
The fundamental disagreement remains: does being suspected of a financial transgression (hashud al ha-mammon) automatically imply being suspected of a false oath (hashud al ha-shevuah)? Rabbi Yohanan says yes, while the other view says no. The final resolution is that people are more hesitant to make a false oath than to commit a financial transgression, as a financial wrong can potentially be rectified, but a false oath cannot be retracted.