Leviticus 13:7

7 But if the rash does spread in their skin after they have shown themselves to the priest to be pronounced clean, they must appear before the priest again.

Read Leviticus 13:7 Using Other Translations

But if the scab spread much abroad in the skin, after that he hath been seen of the priest for his cleansing, he shall be seen of the priest again:
But if the eruption spreads in the skin, after he has shown himself to the priest for his cleansing, he shall appear again before the priest.
But if the rash continues to spread after the person has been examined by the priest and has been pronounced clean, the infected person must return to be examined again.