Deuteronomy 23:11-13

Revised Standard Version

¹¹ but when evening comes on, he shall bathe himself in water, and when the sun is down, he may come within the camp.

¹² “You shall have a place outside the camp and you shall go out to it; ¹³ and you shall have a stick with your weapons; and when you sit down outside, you shall dig a hole with it, and turn back and cover up your excrement.