15. Every open vessel, which has no covering bound on it, is unclean.
16. “Whoever in the open field touches one who is slain with a sword, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.
17. “For the unclean, they shall take of the ashes of the burning of the sin offering; and running water shall be poured on them in a vessel.