Leviticus 13:55

and the priest shall look on the plague after that it is washed; and, behold, if the plague have not changed his color, and the plague be not spread, it is unclean; thou shalt burn it in the fire; it is fret inward, whether it be bare within or without. The terms in the Hebrew are here used in the same way as those concerning baldness in human beings. Whether the right or the wrong side of the cloth still showed the mark or spot distinctly, the garment was to be condemned.