Numbers 19:11-16 NKJV
‘He who touches the dead body of anyone shall be unclean seven days. He shall purify himself with the water on the third day and on the seventh day; then he will be clean. But if he does not purify himself on the third day and on the seventh day, he will not be clean. Whoever touches the body of anyone who has died, and does not purify himself, defiles the tabernacle of the LORD. That person shall be cut off from Israel. He shall be unclean, because the water of purification was not sprinkled on him; his uncleanness is still on him. ‘This is the law when a man dies in a tent: All who come into the tent and all who are in the tent shall be unclean seven days; and every open vessel, which has no cover fastened on it, is unclean. Whoever in the open field touches one who is slain by a sword or who has died, or a bone of a man, or a grave, shall be unclean seven days.