Why the Garment Teaches the Duty to Return a Lost Object

"For a sheep, for a garment" (Exodus 22:8). The garment too was included in "every lost item of your brother's" (Deuteronomy 22:3), so why was it singled out? To draw an analogy to it and tell you: just as a garment is distinct in that it has identifying marks and has claimants, so too anything that has identifying marks and has claimants — one is obligated to announce it. Rava said: why did the Merciful One need to write ox and donkey, sheep and garment? They are all necessary. For if the Merciful One had written only "garment," I would have said this applies only with witnesses to its body, or alternatively with identifying marks on its body, but a donkey we would not return by the identifying marks of its saddle. Therefore the Merciful One wrote "donkey," to teach that we return it even by the identifying marks of its saddle. "Ox," to teach that we return it even by the shearing of its tail, etc. Why then is "sheep" needed? A donkey serves the law of the pit according to Rabbi Yehuda, and a sheep serves the law of a lost object according to all opinions — this is difficult.