Leviticus 13:55

Complete Jewish Bible

(RY: iv, LY: vii) ⁵⁵ The cohen is to examine it after the stain has been washed, and if he sees that the stain has not changed color, then, even though the stain has not spread, it is unclean; you are to burn it up completely — it is rotten, no matter whether the spot is on the outside or on the inside.