Rabbi Yosi holds that one cannot profit from someone else's object. Does he also disagree with the rabbis about the case in the first Mishna of the chapter regarding the shomer who pays for the item and acquires the double payment if the robber is found? The next Mishna raises cases regarding doubts about whose money was stolen from or who gave which amount of money to the shomer to watch. The Gemara raises contradictions between the two cases and with other mishnayot and other principles regarding money in doubt and reconciles the differences.