Leviticus 19:20-22

20"If a man lies sexually with a woman who is a slave, assigned to another man and not yet ransomed or given her freedom, a distinction shall be made. They shall not be put to death, because she was not free;

21but he shall bring his compensation to the Lord, to the entrance of the tent of meeting, a ram for a guilt offering.

22And the priest shall make atonement for him with the ram of the guilt offering before the Lord for his sin that he has committed, and he shall be forgiven for the sin that he has committed.