Leviticus 6:28

The earthen vessel shall be broken, because being full of pores, the liquor in which it was sodden might easily sink into it, whereby it was ceremonially holy, and therefore was broken, lest afterwards it should be abused to profane or common uses. It shall be both scoured, and not broken, as being of considerable value, which therefore God would not have unnecessarily wasted. And this being of a more solid substance than an earthen vessel, was not so apt to drink in the humour.