Numbers 19:12-19

12He 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.

13Whoever 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.

14‘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;

15and every open vessel, which has no cover fastened on it, is unclean.

16Whoever 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.

17‘And for an unclean person they shall take some of the ashes of the heifer burnt for purification from sin, and running water shall be put on them in a vessel.

18A clean person shall take hyssop and dip it in the water, sprinkle it on the tent, on all the vessels, on the persons who were there, or on the one who touched a bone, the slain, the dead, or a grave.

19The clean person shall sprinkle the unclean on the third day and on the seventh day; and on the seventh day he shall purify himself, wash his clothes, and bathe in water; and at evening he shall be clean.