Leviticus 13:57

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.

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.