Deuteronomy 23:11-13 King James 2000 (KJ2000)

11. But it shall be, when evening comes on, he shall wash himself with water: and when the sun is down, he shall come into the camp again.

12. You shall have a place also outside the camp, where you shall go out:

13. And you shall have a stick with your weapons; and it shall be, when you will relieve yourself outside, you shall dig with it, and shall turn back and cover your refuse:

Deuteronomy 23