Leviticus 13:28

But if the bright spot remain stationary, and be not spread in the skin, but [the sore] should be dark, it is a scar of inflammation; and the priest shall pronounce him clean, for it is the mark of the inflammation.

And if the bright spot stay in his place, and spread not in the skin, but it be somewhat dark; it is a rising of the burning, and the priest shall pronounce him clean: for it is an inflammation of the burning.

If the bright spot stays in its place, and hasn’t spread in the skin, but is faded, it is the swelling from the burn, and the priest shall pronounce him clean, for it is the scar from the burn.