Leviticus 6:28
And the earthenware vessel in which it is boiled shall be broken. But if it is boiled in a bronze vessel, that shall be scoured and rinsed in water.
Leviticus 11:33
And if any of them falls into any earthenware vessel, all that is in it shall be unclean, and you shall break it.
Leviticus 15:12
And an earthenware vessel that the one with the discharge touches shall be broken, and every vessel of wood shall be rinsed in water.
Hebrews 9:9-10
(which is symbolic for the present age). According to this arrangement, gifts and sacrifices are offered that cannot perfect the conscience of the worshiper,