daf bit: Shevuot 36
A (lengthy) mishna discusses oaths of deposit. This is the case where somebody asks for his property back from someone else (for example, because he lent it, but this could also cover theft, found objects, and other cases), and that person says "I don't have it" and swears to that, either directly or indirectly. The mishna says that oaths of deposit (and the penalties for violating them) apply to men and women, to relatives and non-relatives, to those qualified to be witnesses and those not qualified, before the beit din (court) or not before it, and directly and indirectly sworn. (There is discussion of different penalties for direct and indirect.) What does it mean by indirect? Reuven says "give me my property that is on deposit with you", Shimon says "I don't have anything of yours", Reuven says "I adjure you", and Shimon answers "amen" -- he has validated the oath but not actually said "I swear" with his own mouth, and this counts as an oath. (36b)
Today's daf is 37.