Leviticus 13:48-52

whether in warp or woof, of linen or of wool, whether in leather or in any article made of leather,

if the mark is greenish or reddish in the garment or in the leather, whether in the warp or in the woof, or in any article of leather, it is a leprous mark and it shall be shown to the priest.

Then the priest shall look at the mark and shall quarantine the article with the mark for seven days.

He shall then look at the mark on the seventh day; if the mark has spread in the garment, whether in the warp or in the woof, or in the leather, whatever the purpose for which the leather is used, the mark is a leprous malignancy, it is unclean.

So he shall burn the garment, whether it is the warp or the woof, in wool or in linen, or any article of leather, in which the mark occurs; for it is a leprous malignancy. It shall be burned in the fire.