When a couple divorces, deciding who gets what can be a hard and traumatic thing. While you are supposed to “split” things, you can’t split a house. On today’s daf, two partners vow not to derive benefit from one another. The question becomes – who gets their shared space?
MISHNA: Partners who vowed not to derive benefit from one another are prohibited from entering into a courtyard that they jointly own, since each one has a portion in it and benefits from the share owned by the other, thereby leading to a violation of the vow. . . Rabbi Eliezer ben Ya’akov says: He can say to the partner: I am entering into my own portion and I am not entering into your portion.
So, which is it? That neither can use the space or they both can? Well,
Rabba said that Ze’eiri said: The dispute between Rabbi Eliezer ben Ya’akov and the Rabbis is with regard to a courtyard where there is sufficient area in the courtyard for it to be divided into four square cubits for each partner, so each can be said to have a real portion that can be forbidden to the other. But if there is not sufficient area in it to be divided, everyone agrees that it is permitted to benefit from it, since the entire courtyard is viewed as belonging to both of them and each one can say that he is entering his own portion.
So, here they are saying – if the space is so big that you can actually divide it up and avoid the other persons portion – then you do it! But if it’s too small to divide, both of you can use it. This clearly matters when you are breaking up a partnership/co-ownership. But we also all need it! Why?
Rav Yosef said to Rabba: A synagogue belongs to the entire public and is therefore considered like a courtyard in which there is not sufficient area in it to be divided, and we learned in a mishna later in the chapter (48a) that with regard to two people who vow not to derive benefit from each other, both are prohibited from deriving benefit from an entity belonging to that city such as a synagogue.
What!!! Don’t worry, Rav Huna said: The halakha is in accordance with the opinion of Rabbi Eliezer ben Ya’akov. This means that we can all use the synagogue – even when our x is there.
The message? Breaking up is hard to do. It’s hard to decide who gets what and to learn to give one another space. But certain spaces, like the synagogue, should not be places that both avoid – but places where both are still welcome.

