Numbers 19
20 Ref But the man who, being unclean, does not make himself clean in this way, will be cut off from the meeting of the people, because he has made the holy place of the Lord unclean: the water has not been put on him, he is unclean.
21 Ref This is to be a law for them for ever: he who puts the water on the unclean person is to have his clothing washed; and anyone touching the water will be unclean till evening.