the Messenger of Allah (s.a.w) permitted Ruqyah for the scorpion sting, the(evil) eye, and An-Namlah.

Another chain reports a similar narration.
Jami` at-Tirmidhi Book 28, Hadith 21
← Previous Hadith "Whoever seeks treatment by cauterization, or with Ruqyah, then he has absolved himself of At-Tawakkul (reliance upon Allah)."

Jami` at-Tirmidhi Book 28, Hadith 20 Next Hadith → "No Ruqyah except for the (evil) eye and the scorpion sting."

Jami` at-Tirmidhi Book 28, Hadith 22