TT #282 · Parshas Tazria · Aliyah 7 · Passuk 52
English: He shall burn the garment, the warp or woof of wool or linen, or any leather article in which the lesion is found, for it is malignant tzaraas; it shall be burned in fire.
Torah Temimah cites Sifra (Toras Kohanim) for limiting the rule to material capable of receiving the garment affliction.
Sifra — Vayikra 13, Midrash Sefer
English: The phrase refers to material capable of receiving the garment affliction.
Textual derivation
Only material that is capable of receiving the prescribed affliction is included.