From Sahih Bukhari (Hadith 5720):
Narrated Anas bin Malik:Allah's Messenger (ﷺ) allowed one of the Ansar families to treat persons who have taken poison and also who are suffering from ear ailment with Ruqya. Anas added: I got myself branded cauterized) for pleurisy, when Allah's Messenger (ﷺ) was still alive. Abu Talha, Anas bin An-Nadr and Zaid bin Thabit witnessed that, and it was Abu Talha who branded (cauterized) me
Reference: Bukhari 5720