Leviticus 11:36-39

³⁶Nevertheless, a spring or a well, a quantity of water, shall be clean. But he that toucheth their carcase shall be unclean.

³⁷And if any part of their carcase fall upon any sowing-seed which is to be sown, it shall be clean;

³⁸but if water have been put on the seed, and any part of their carcase fall thereon, it shall be unclean unto you.

³⁹And if any beast which is to you for food die, he that toucheth the carcase thereof shall be unclean until the even.