利未记 13:51

第七天，他要察看那灾病，灾病或在衣服上，经上、纬上，皮子上，若发散，这皮子无论当作何用，这灾病是蚕食的大麻风，都是不洁净了。

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.