Numbers 19
11 Ref He who touches the dead body of any man shall be unclean seven days:
12 Ref the same shall purify himself therewith on the third day, and on the seventh day he shall be clean: but if he doesn't purify himself the third day, then the seventh day he shall not be clean.
13 Ref Whoever touches a dead person, the body of a man who has died, and doesn't purifies himself, defiles the tent of Yahweh; and that soul shall be cut off from Israel: because the water for impurity was not sprinkled on him, he shall be unclean; his uncleanness is yet on him.
14 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.