Leviticus 19:20-22

20“If a man lies sexually with a woman who is a slave girl, pledged to be married to another man, but not ransomed or given her freedom, they are both to be punished. But they are not to be put to death, because she was not free.

21He is to bring his trespass ­offering to Adonai, to the entrance of the Tent of Meeting—a ram for a guilt offering.

22The kohen is to make atonement for him with the ram of the trespass offering before Adonai for his sin that he committed, and the sin that he committed will be forgiven him.