Today's daf is sponsored by Malka Abraham in loving memory of her mother, Yehudit bat Mshalem Ziza v'Chanah. "My mom always encouraged women to be lifelong learners and a love of Yiddishkeit."

If one finds an animal wandering, how does one determine if it is lost or if the owner knows its whereabouts? Rava explains that helping to protect another’s field from being destroyed is also included under the commandment to return lost items. Can this be proven from a braita? The Mishna which differentiated between cases of an animal grazing on a path and an animal running in a vineyard leads to inferences that contradict each other regarding grazing in a field and running on a path. Rava and Abaye each resolve the contradiction differently. One needs to return an item multiple times if need be. From where is this derived? Various drashot are brought regarding places in the Torah where a double language is used, such as lost items, sending away the mother bird, rebuking, charity, and others. What is derived from the double language in each verse? How do we assess the compensation one receives for stopping one’s work to attend to a lost item?