Leviticus 13:51

And the priest shall look upon the plague on the seventh day; and if the plague be spread in the garment, either in the warp or in the woof, or in the skin, in whatsoever things skins may be used in their workmanship, the plague is a confirmed leprosy; it is unclean.

And he shall look on the plague on the seventh day: if the plague be spread in the garment, either in the warp, or in the woof, or in a skin, or in any work that is made of skin; the plague is a fretting leprosy; it is unclean.

He shall examine the plague on the seventh day. If the plague has spread in the garment, either in the warp, or in the woof, or in the skin, whatever use the skin is used for, the plague is a destructive mildew. It is unclean.