Leviticus 19:20-22

20‘Whoever lies carnally with a woman who is betrothed to a man as a concubine, and who has not at all been redeemed nor given her freedom, for this there shall be scourging; but they shall not be put to death, because she was not free.

21And he shall bring his trespass offering to the Lord, to the door of the tabernacle of meeting, a ram as a trespass offering.

22The priest shall make atonement for him with the ram of the trespass offering before the Lord for his sin which he has committed. And the sin which he has committed shall be forgiven him.