Deuteronomy 23:9-11

New International Version

Uncleanness in the Camp

⁹ When you are encamped against your enemies, keep away from everything impure.^{(A) 10} If one of your men is unclean because of a nocturnal emission, he is to go outside the camp and stay there.^{(B) 11} But as evening approaches he is to wash himself, and at sunset^(C) he may return to the camp.^(D)