Numbers 19:18-20

LITV(i) 18 And a clean person shall take hyssop, and shall dip it in the water, and shall sprinkle it upon the tent, and upon all the vessels, and upon the persons that were there, and upon him that touched the bone, or the slain, or the dead, or the grave. 19 And the clean person shall sprinkle on the unclean on the third day, and on the seventh day; and on the seventh day he shall purify himself; and he shall wash his clothes, and bathe himself in water, and shall be clean at evening. 20 But the man that shall be unclean, and shall not purify himself, that soul shall be cut off from the midst of the congregation, because he has defiled the sanctuary of Jehovah; the water for impurity has not been sprinkled on him; he shall be unclean.