Leviticus 11:35-38

³⁵And everything where upon any part of their carcase falleth shall be unclean; oven and hearth shall be broken down: they are unclean, and shall be unclean unto you.

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.