Deuteronomy 21:11

21:11 if you should see among them an attractive woman whom you wish to take as a wife,

Deuteronomy 32:42

32:42 I will make my arrows drunk with blood,

and my sword will devour flesh –

the blood of the slaughtered and captured,

the chief of the enemy’s leaders!’”

Deuteronomy 21:13

21:13 discard the clothing she was wearing when captured, and stay in your house, lamenting for her father and mother for a full month. After that you may have sexual relations with her and become her husband and she your wife.