Numbers 19:16-20

MLV(i) 16 And whoever in the open field touches a man who is slain with a sword, or a dead body, or a bone of a man, or a grave, will be unclean seven days. 17 And for the unclean they will take of the ashes of the burning of the sin offering and running water will be put with that in a vessel. 18 And a clean man will take hyssop and dip it in the water and sprinkle it upon the tent and upon all the vessels and upon the souls who were there and upon him who touched the bone, or the slain, or the dead, or the grave. 19 And the clean man will sprinkle upon the unclean on the third day and on the seventh day. And on the seventh day he will purify him. And he will wash his clothes and bathe himself in water and will be clean at evening.
20 But the man who will be unclean and will not purify himself, that soul will be cut off from the midst of the assembly, because he has defiled the sanctuary of Jehovah. The water for impurity has not been sprinkled upon him; he is unclean.