Leviticus 11:38-40

³⁸But if water be poured on any seed, and one of their dead bodies fall upon it, it is unclean to you.

³⁹And if one of the cattle die, which it is lawful for you to eat, he that touches their carcasses shall be unclean till evening.

⁴⁰And he that eats of their carcasses shall wash his garments, and be unclean till evening; and he that carries any of their carcasses shall wash his garments, and bathe himself in water, and be unclean till evening.