TSK · Numbers 31:20

Then Jacob said to his household, and to all who were with him, "Put away the foreign gods that are among you, purify yourselves, change your garments.

"This is the law when a man dies in a tent: everyone who comes into the tent, and everyone who is in the tent, shall be unclean seven days.

"Whatever the unclean person touches shall be unclean; and the soul that touches it shall be unclean until evening."