Leviticus 13:57

57 But if the mildew comes back to that piece of leather or cloth (either woven or knitted), the mildew is spreading. And whatever has the mildew must be burned with fire.

Leviticus 13:57 Meaning and Commentary

Leviticus 13:57

And if it appear still in the garment, either in the warp, or
in the woof, or in anything of skin
After the piece has been rent out, in another part of the garment where before it was not seen: it [is] a spreading [plague];
or leprosy; a flourishing one, as the word signifies, a growing and increasing one: thou shalt burn that wherein the plague [is] with fire;
according to Aben Ezra, only that part in which the plague was; but Jarchi says the whole garment; with whom Ben Gersom seems to agree, who reads the words, thou shall burn it, with that in which the plague is; the whole garment, skin, warp, or woof, along with the part in which the leprosy is.

Leviticus 13:57 In-Context

55 After the piece with the mildew has been washed, the priest must look at it again. If the mildew still looks the same, the piece is unclean, even if the mildew has not spread. You must burn it in fire; it does not matter if the mildew is on one side or the other.

56 "But when the priest looks at that piece of leather or cloth, the mildew might have faded after the piece has been washed. Then the priest must tear the mildew out of the piece of leather or cloth (either woven or knitted).

57 But if the mildew comes back to that piece of leather or cloth (either woven or knitted), the mildew is spreading. And whatever has the mildew must be burned with fire.

58 When the cloth (either woven or knitted) or the leather is washed and the mildew is gone, it must be washed again; then it will be clean.

59 "These are the teachings about mildew on pieces of cloth (either woven or knitted) or leather, to decide if they are clean or unclean."