Numbers 19:9-13

⁹And a man that is clean shall gather up the ashes of the heifer, and lay them up without the camp in a clean place, and it shall be kept for the congregation of the children of Israel for a water of sprinkling; it is a purification from sin.

¹⁰And he that gathereth the ashes of the heifer shall wash his clothes, and be unclean until the even; and it shall be unto the children of Israel, and unto the stranger that sojourneth among them, for a statute for ever.

¹¹He that toucheth the dead, even any man's dead body, shall be unclean seven days;

¹²the same shall purify himself therewith on the third day and on the seventh day, and he shall be clean; but if he purify not himself the third day and the seventh day, he shall not be clean.

¹³Whosoever toucheth the dead, even the body of any man that is dead, and purifieth not himself — he hath defiled the tabernacle of the LORD — that soul shall be cut off from Israel; because the water of sprinkling was not dashed against him, he shall be unclean; his uncleanness is yet upon him.