Ketubot 92b: Talmud study for Daf Yomi

However, if Levi left similar land of intermediate quality with Shimon, he can say to the creditor: I have left you a place from which to collect; go and collect from Shimon.

Abaye said: In a case where Reuven sold a field to Shimon with a guarantee that if the field is repossessed, he will compensate Shimon for his loss and Reuven’s creditor comes and repossesses the land from Shimon, the law is that Reuven goes and rescues Shimon by attempting to forestall the repossession, and the creditor cannot say to Reuven: I am not legally answerable to you since I am taking the field from Shimon. This is because Reuven can retort: What you take from him comes back to me: Since I guaranteed the sale and will ultimately have to compensate Shimon, you cannot claim that I am not a legal party in this matter.

And there are those who say that even if Reuven sold Shimon the field with no guarantee, he can also join in the deliberations and attempt to forestall the repossession of the land. This is because Reuven can say to the creditor: It is not amenable to me that Shimon will have a grievance against me for having sold him land that was then repossessed.

Abaye said: In a case where Reuven sold a field to Shimon with no guarantee, and it emerged that he had