Numbers 31:14-16

14But Moses was angry with the officers of the army, with the captains over thousands and captains over hundreds, who had come from the battle.

15And Moses said to them: “Have you kept all the women alive?

16Look, these women caused the children of Israel, through the counsel of Balaam, to trespass against the Lord in the incident of Peor, and there was a plague among the congregation of the Lord.