Leviticus 11:32-36

32Anything on which any of them falls, when they are dead shall be unclean, whether it is any item of wood or clothing or skin or sack, whatever item it is, in which any work is done, it must be put in water. And it shall be unclean until evening; then it shall be clean.

33Any earthen vessel into which any of them falls you shall break; and whatever is in it shall be unclean:

34in such a vessel, any edible food upon which water falls becomes unclean, and any drink that may be drunk from it becomes unclean.

35And everything on which a part of any such carcass falls shall be unclean; whether it is an oven or cooking stove, it shall be broken down; for they are unclean, and shall be unclean to you.

36Nevertheless a spring or a cistern, in which there is plenty of water, shall be clean, but whatever touches any such carcass becomes unclean.