Numbers 19:11-13

Young's Literal Translation

¹¹ `He who is coming against the dead body of any man -- is unclean seven days;

¹² he doth cleanse himself for it on the third day, and on the seventh day he is clean; and if he cleanse not himself on the third day, then on the seventh day he is not clean.

¹³ Any one who is coming against the dead, against the body of man who dieth, and cleanseth not himself -- the tabernacle of Jehovah he hath defiled, and that person hath been cut off from Israel, for water of separation is not sprinkled upon him; he is unclean; his uncleanness [is] still upon him.