Numbers 19:9; Numbers 19:13; Numbers 19:20

9 “A man who is clean shall gather up the ashes of the heifer and put them in a ceremonially clean place outside the camp. They are to be kept by the Israelite community for use in the water of cleansing; it is for purification from sin.

13 If they fail to purify themselves after touching a human corpse, they defile the LORD’s tabernacle. They must be cut off from Israel. Because the water of cleansing has not been sprinkled on them, they are unclean; their uncleanness remains on them.

20 But if those who are unclean do not purify themselves, they must be cut off from the community, because they have defiled the sanctuary of the LORD. The water of cleansing has not been sprinkled on them, and they are unclean.