Leviticus 13:56-58

New International Version - UK

⁵⁶ If, when the priest examines it, the mould has faded after the article has been washed, he is to tear the spoiled part out of the fabric, the leather, or the woven or knitted material. ⁵⁷ But if it reappears in the fabric, in the woven or knitted material, or in the leather article, it is a spreading mould; whatever has the mould must be burned. ⁵⁸ Any fabric, woven or knitted material, or any leather article that has been washed and is rid of the mould, must be washed again. Then it will be clean.’