Deuteronomy 21:11-13

The Voice

¹¹ you may see a beautiful woman among the captives and be attracted to her and want to marry her. ¹² Bring her back to your house, and then have her shave her head and cut her nails ¹³ and exchange her old clothes she was wearing when she was captured for new ones. Let her stay in your house and mourn for her father and mother for a month. Only after that may you, as her husband, have sexual relations with her. She will be your fully legal wife and you her husband.