Bava Kamma 57A

החזירה למקום שיראנה ⁠– אינו חייב לטפל בה. נגנבה או אבדה ⁠– חייב באחריותה.

If one found a lost item and he returned it to a place where its owner will see it, he is no longer responsible to deal with it. If the item was stolen or lost, the finder bears financial responsibility to compensate for the loss.

מאי ״נגנבה או אבדה״? לאו נגנבה מביתו ואבדה מביתו?

Rav Yosef states his objection: What is meant by the expression: Was stolen or lost? Does it not mean that it was stolen from the finder’s house or lost from his house before he returned it? Since he is liable for theft or loss, it appears that he has the same status as a paid bailee.

לא, ממקום שהחזירה.

Rabba rejects this challenge: No, it means that it was stolen or lost from the place where the finder returned it, in which case even an unpaid bailee is liable on the grounds of negligence.

והא קתני: אינו חייב ליטפל בה!

Rav Yosef challenges Rabba’s response: But the baraita teaches that the finder is no longer responsible to deal with it, indicating that failing to deal with it is not negligence, and the finder has no further responsibility for it.

אמר ליה: הכא במאי עסקינן ⁠– כגון שהחזירה בצהרים.

Rabba said to him: With what are we dealing here, at the end of the baraita, where it teaches that the finder is liable? We are dealing with a case where he returned it at midday, which is a time when the owner of the lost item is not typically present. Therefore, the finder has not returned the item properly, and if it is then stolen or lost, he bears responsibility even if he is an unpaid bailee.