Leviticus 13:53-56

53“But if, when the priest examines it, the mold has not spread in the fabric, the woven or knitted material, or the leather article, 54he shall order that the spoiled article be washed. Then he is to isolate it for another seven days. 55After the article has been washed, the priest is to examine it again, and if the mold 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. 56If, when the priest examines it, the mold 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.