Commentary for Bava Metzia 47:8

ואם תמצא לומר פליגי ברוב ישראל ודאי פליגי ברוב כנענים פליגי או לא פליגי

One leaf on one branch ['bad']. 'R. Simeon b. Eleazar also said: If one rescues anything from a lion, a bear, a leopard, a panther, or from the tide of the sea, or from the flood of a river, or if one finds anything on the high road, or in a broad square, or in any place where crowds are frequent, it belongs to the finder — because the owner has given it up.<span class="x" onmousemove="('comment',' A.Z. 43a. ');">⁷</span>

Rashi on Bava Metzia