Leviticus 13:57 in the World English Bible
and if it appears again in the garment, either in the warp, or in the woof, or in anything of skin, it is spreading. You shall burn what the plague is in with fire.
Context
56 And if the priest look, and, behold, the plague be somewhat dark after the washing of it; then he shall rend it out of the garment, or out of the skin, or out of the warp, or out of the woof:
57 And if it appear still in the garment, either in the warp, or in the woof, or in any thing of skin; it is a spreading plague: thou shalt burn that wherein the plague is with fire.
58 And the garment, either warp, or woof, or whatsoever thing of skin it be, which thou shalt wash, if the plague be departed from them, then it shall be washed the second time, and shall be clean.