Leviticus 13:37

But if the scurf remain before [him] in its place, and a dark hair should have arisen in it, the scurf is healed: he is clean, and the priest shall pronounce him clean.

But if the scall be in his sight at a stay, and that there is black hair grown up therein; the scall is healed, he is clean: and the priest shall pronounce him clean.

But if in his eyes the itch is arrested and black hair has grown in it, then the itch is healed. He is clean. The priest shall pronounce him clean.