Leviticus 11:35-38

³⁵And every thing whereupon any part of their carcase falleth shall be unclean; whether it be oven, or ranges for pots, they shall be broken down: for they are unclean, and shall be unclean unto you.

³⁶Nevertheless a fountain or pit, wherein there is plenty of water, shall be clean: but that which 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 any water be put upon the seed, and any part of their carcase fall thereon, it shall be unclean unto you.