Leviticus 19:20-22

“If a man has sex with a slave girl who is engaged to another man but has not yet been ransomed or given her freedom, there must be an investigation. But they aren’t to be put to death because she wasn’t free. The man must bring a Compensation-Offering to GOD at the entrance to the Tent of Meeting, a ram of compensation. The priest will perform the ritual of atonement for him before GOD with the ram of compensation for the sin he has committed. Then he will stand forgiven of the sin he committed.