Numbers 19:18

Overview - Numbers 19
1	The water of separation made of the ashes of a red heifer.
11	The law for the use of it in purification of the unclean.

Numbers 19:18  (King James Version)
And a clean person shall take hyssop, and dip it in the water, and sprinkle it upon the tent, and upon all the vessels, and upon the persons that were there, and upon him that touched a bone, or one slain, or one dead, or a grave: