TSK · Numbers 19:21

and anyone who carries their carcass must wash his clothes and will be unclean until the evening.

and the one who sent the goat away to Azazel must wash his clothes, bathe his body in water, and afterward he may reenter the camp.

Then the priest must wash his clothes and bathe himself in water, and afterward he may come into the camp, but the priest will be ceremonially unclean until evening.

The one who gathers the ashes of the heifer must wash his clothes and be ceremonially unclean until evening. This will be a permanent ordinance both for the Israelites and the resident foreigner who lives among them.

They served only for matters of food and drink and various ritual washings; they are external regulations imposed until the new order came.

For it is impossible for the blood of bulls and goats to take away sins.