Numbers 19:21
"And it shall be a perpetual statute unto them, that he that sprinkleth the water of separation shall wash his clothes; and he that toucheth the water of separation shall be unclean until even."
Cross References (ranked by relevance)
For it is not possible that the blood of bulls and of goats should take away sins.
And whosoever beareth ought of the carcase of them shall wash his clothes, and be unclean until the even.
Which stood only in meats and drinks, and divers washings, and carnal ordinances, imposed on them until the time of reformation.
For the law made nothing perfect, but the bringing in of a better hope did; by the which we draw nigh unto God.
And he that eateth of the carcase of it shall wash his clothes, and be unclean until the even: he also that beareth the carcase of it shall wash his clothes, and be unclean until the even.