Nedarim 4:8-5:1

Nedarim 4:8

Continuing the case of a person who is prohibited by a vow from benefitting from his friend, if they were traveling together and the one who vowed had no food, the friend can give food as a gift to a third party. This third party may then give it permissibly to the one who vowed. If there is no third party with them, the friend can put the food on a rock or on a fence and declare it ownerless for anyone who wants to take it. The one who vowed may then take it, though Rabbi Yosi prohibits this.

Nedarim 5:1

If partners are prohibited by a vow from benefitting from one another, then neither is permitted to enter their jointly-owned property; Rabbi Eliezer ben Yaakov says that each one enters into his own portion. Neither one is allowed to set up a millstone or an oven on the property, nor to raise chickens there. If only one of them is prohibited by a vow from benefitting from the other, then he may not enter the property. Rabbi Eliezer ben Yaakov says that the one who is prohibited can tell the other, “I will enter my portion and not yours.” If one partner prohibited himself from benefitting from the other, he is compelled to sell his share in the property.