Leviticus 11:35-38

³⁵Anything that one of their dead bodies falls on becomes unclean. If it's an oven or a stove, it must be smashed. It is permanently unclean for you.

³⁶On the other hand, if it's a spring or cistern containing water then it will remain clean, but if you touch one of these dead bodies in it you will be unclean.

³⁷Similarly, if one of their dead bodies falls on any seed used for sowing, the seed remains clean;

³⁸but if the seed has been soaked in water and one of their dead bodies falls on it, it is unclean for you.