Avodah Zarah 63: Commerce Concerns

A beraita about a man who was with a prostitute - can the money he didn't pay her with be used for purchase for the altar? What monies can be swapped for which? Plus, sacrifices. Also, whether it was permitted to borrow produce from the poor before the shemitah year, and paid them back after the shemitah year. Plus, how a Jewish employer might gift or sponsor his employees leisure purchases.