Deuteronomy 21:12-14

Complete Jewish Bible

¹² you are to bring her home to your house, where she will shave her head, cut her fingernails ¹³ and remove her prison clothing. She will stay there in your house, mourning her father and mother for a full month; after which you may go in to have sexual relations with her and be her husband, and she will be your wife. ¹⁴ In the event that you lose interest in her, you are to let her go wherever she wishes; but you may not sell her for money or treat her like a slave, because you humiliated her.