Deuteronomy 21:11-13

Holman Christian Standard Bible

¹¹ if you see a beautiful woman among the captives, desire her, and want to take her as your wife, ¹² you are to bring her into your house. She must shave her head, trim her nails, ¹³ remove the clothes she was wearing when she was taken prisoner, live in your house, and mourn for her father and mother a full month. After that, you may have sexual relations with her and be her husband, and she will be your wife.