Numbers 19
20 Ref But the man who shall be unclean, and shall not purify himself, that soul shall be cut off from the midst of the assembly, because he has defiled the sanctuary of Yahweh: the water for impurity has not been sprinkled on him; he is unclean.
21 Ref It shall be a perpetual statute to them: and he who sprinkles the water for impurity shall wash his clothes, and he who touches the water for impurity shall be unclean until even.