What constitutes coercion? This question affects several areas of halakhah, such as the avenues a beit din might use to elicit a get from a man who does not wish to give one, yet is not halakhically liable for coercive measures. It also comes up in business dealings, since there is some question as to whether coercive sales are valid. These halakhot can become fairly complicated, so I thought it might be interesting to review some of the fundamentals.

A gift given under duress does not take effect. To take the simplest case if one person punches another until the latter gives him whatever object he was seeking, the object remains the original owner’s, and he can retrieve it anytime he is able to take the aggressor to beit din. The same applies to a meaningful threat of such force (as long as the threat can clearly be carried out). Not only physical force is included in this duress, but even financial loss. In the case the Talmud uses, a long-term tenant who could successfully lie and claim to have bought the piece of land he was renting threatened to do exactly that unless the landlord sold it to him. Since the landlord was not in possession of the lease document, this was a valid threat, and is therefore considered coercion enough to invalidate the sale.

When it comes to sales, however, there is a complication in that the gemara rules that, in at least some circumstances a coerced sale— where money is handed over for the object being coerced out of its owner’s possession—is valid. If the witnesses see the owner of an object receive its fair market value or, in the case of land, as long as the purchase price was also not set coercively (they mutually agreed on a price, although the whole idea of sale was forced on the owner), the gemara assumes that the presence of money is enough to lead theowner to accede to the sale. It is prohibited to buy objects or property this way (it is, in fact, a violation of lo tahmod, the prohibition against wanting what others have), but it works.

I should mention that physical force and the threat of unfair losses is considered coercion that can invalidate a sale or a gift, but simple monetary pressure— a loan is coming due and needs to be repayed, a stockbroker is making margin calls, etc.— do not qualify as coercion that the person can use to avoid the consequences of needing to sell some property. We should never worry, for example, that if someone is selling their home because they urgently need capital for their business, that they can later come back and invalidate the sale (halakhically, to a beit din’s satisfaction) because of those factors.

How can a person protect him or herself from such coercion? Is it the case that a powerful, rich, and unscrupulous person can simply buy whatever he wants, with no halakhic barriers to his advancing hegemony? The answer is not quite: first, there are a few limitations to the talyuhu ve-zavin rule: Some authorities required that the witnesses to the sale see the money passing hands; it was not enough that the current owner agreed he was going to get (or had gotten) money for the sale, since it might have been the actual physical money that convinced the current owner to abandon his resistance to the pressure. Second, the purchase price is important— even if the price wasn’t coerced, if it is more than 1/6th different from the valid market price for a movable object, it would be disregarded as a fraudulent sale. If the buyer forced the price also, the sale would be invalid for both landed and movable property unless the price was the actual market value of the object. Third, and most importantly, there has to have been no moda`ah, no declaration of duress on the part of the seller, prior to the sale.

A moda`ah is where the seller (without the buyer’s knowledge) says to two witnesses "I want you to know that I amentering this sale (or giving this gift) under force and that I do not wish it to be valid," or "I hereby nullify all future sales I may make to so-and-so," or similar words to that effect. In the case of a sale, because of the possibility that the presence of money convinces the seller to have full intent to sell, the witnesses need to know of the duress to validate the moda`a. In the case of a gift, since gifts are completely in the hands of the giver, even a moda`a without known duress is valid and means that the gift can be revoked at any time.

Obviously, a moda`a system can lead to abuses— it would be greatly inconvenient to have to worry each time a gift is given or a purchase made that it could later be invalidated by a moda`a having been stated to two witnesses who only come forward years later. To protect against that eventuality, we customarily include in documents of sale a bittul moda`a, a statement that the seller nullifies all previous moda`ot he may have made and enters the sale fully and agreeably. While this gives buyers much-needed confidence in the permanence of the sale, it somewhat mitigates the power of moda`a to protect sellers from undue pressure. Some authorities thought one could forestall this by issuing a "super-moda`a," which would nullify ahead of time all bitullei moda`a, all nullifications of the present moda`a. Le-halakhah, we reject that path (it quickly leads to an infinite regress) and rule that a bittul of all moda`ot at the time of a sale has the desired effect. Those who find themselves in such coercive situations, then, would need to consult with someone to find a way to have their moda`a remain in effect even after going through the sale into which they are being pressured. Shabbat Shalom.

Daf Yomi