Bava Batra 34: It's Mine! Or Using Oaths or the Court to Your Own Ends
A case of contested use of produce -- whose is it? As parallel to Rabbi Abba's case, when one snatched a silver ingot, and how that case is compounded by not taking an oath to refute the charge. Also, a case of two who claim ownership of a boat -- where one enlists the court to seize the boat while he makes the case.