Leviticus 13:51

On the seventh day he is to examine it, and if the mold has spread in the fabric, the woven or knitted material, or the leather, whatever its use, it is a persistent defiling mold; the article is unclean.

The priest is to reexamine the contamination on the seventh day. If it has spread in the fabric, the warp, the weft, or the leather, regardless of how it is used, the contamination is harmful mildew; it is unclean.

On the seventh day the priest must inspect it again. If the contaminated area has spread, the clothing or fabric or leather is clearly contaminated by a serious mildew and is ceremonially unclean.

And he shall examine the infection on the seventh day; if the infection has spread on the garment or on the woven material or on the fabric or on the leather, for any work for which the leather is used, the infection is a destructive skin disease—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.