Deuteronomy 21:11-13

New Catholic Bible

¹¹ if you see a beautiful woman among them and you desire her, you can take her as your wife. ¹² Bring her into your house, and have her shave her head and trim her nails ¹³ and have her throw out the clothes she was wearing when she was taken captive. She is to live in your house for a full month and mourn her father and her mother. Then you may go to her and be her husband and she will be your wife.