Leviticus 13:54-56

New International Version - UK

⁵⁴ he shall order that the spoiled article be washed. Then he is to isolate it for another seven days. ⁵⁵ After the article has been washed, the priest is to examine it again, and if the mould has not changed its appearance, even though it has not spread, it is unclean. Burn it, no matter which side of the fabric has been spoiled. 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.