Deuteronomy 23:11-13

King James Version

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

¹² Thou shalt have a place also without the camp, whither thou shalt go forth abroad:

¹³ And thou shalt have a paddle upon thy weapon; and it shall be, when thou wilt ease thyself abroad, thou shalt dig therewith, and shalt turn back and cover that which cometh from thee: