Numbers 31:17-18

31:17 Now therefore kill every boy, and kill every woman who has had sexual intercourse with a man. 31:18 But all the young women who have not had sexual intercourse with a man will be yours.

Deuteronomy 2:34

2:34 At that time we seized all his cities and put every one of them under divine judgment, including even the women and children; we left no survivors.