Every person who eats an animal which dies [of natural causes] or was torn by a predator, whether he is native-born or a stranger, he shall wash his clothes and bathe in water, and be [ceremonially] unclean until evening; then he will become clean. [Acts 15:20]
So it shall be a perpetual statute to them. He who sprinkles the water for impurity [on another] shall wash his clothes, and he who touches the water for impurity shall be unclean until evening.
Then the priest shall wash his clothes and bathe his body in water; and afterward come into the camp, but he shall be [ceremonially] unclean until evening.
Now a man who is [ceremonially] clean shall collect the ashes of the heifer and deposit them outside the camp in a clean place, and the congregation of the Israelites shall keep it for water to remove impurity; it is [to be used for] purification from sin.