Deuteronomy 23:13

and you shall have an implement among your equipment, and when you sit down outside, you shall dig with it and turn and cover your refuse.

Surrounding context

23:12 "Also you shall have a place outside the camp, where you may go out;

23:13 and you shall have an implement among your equipment, and when you sit down outside, you shall dig with it and turn and cover your refuse.

23:14 For the LORD your God walks in the midst of your camp, to deliver you and give your enemies over to you; therefore your camp shall be holy, that He may see no unclean thing among you, and turn away from you.

Translation and sources