The Mishnah says that when someone exchanges a pregnant cow for a donkey and there is doubt as to whether the cow gave birth before or after the transaction, the two parties split the value of the calf, and no one is required to take an oath. But in the beginning of our masekhet, we learned that when in doubt about the ownership of a garment that two people are holding, they divide it but need to take an oath. And in Bava Batra, in a case when two people are fighting over land they each claim is theirs, the verdict is "kol d'alim gvar," meaning that they fight over it. What's the difference between the cases? The gemara says that in the case of the animal exchange there is "derara d'mamona," while in the other two cases there is not. But what is derara d'mamona? Rashi and Tosafot offer different explanations -- join us for a deep dive into this famous debate.

Gefet Ep.81

Learn more on http://hadran.org.il/