Chapter 29: Medicine (Kitab Al-Tibb)
Narrated Imran ibn Husayn: The Prophet (ﷺ) forbade to cauterise; we cauterised but they (cauterisation) did not benefit us, nor proved useful for us. Abu Dawud said: He used to hear the salutation of the angels: When he cauterized, it stopped. When he abandoned, it returned to him.
Sunan Abi Dawud 3865