Leviticus 11:38-40

³⁸But if any man pour water upon the seed, and afterwards it be touched by the carcasses, it shall be forthwith defiled.

³⁹If any beast die, of which it is lawful for you to eat, he that toucheth the carcass thereof, shall be unclean until the evening:

⁴⁰And he that eateth or carrieth any thing thereof, shall wash his clothes, and shall be unclean until the evening.