Leviticus 11:38-40

³⁸But if any water be put upon the seed, and any part of their carcass fall thereon, it shall be unclean unto you.

³⁹And if any cattle die, which is allowed to you as food: he that toucheth its carcass shall be unclean until the evening.

⁴⁰And he that eateth of its carcass shall wash his clothes, and be unclean until the evening; he also that beareth its carcass shall wash his clothes, and be unclean until the evening.