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.  

نَهَى النَّبِيُّ ﷺ عَنِ الْكَىِّ فَاكْتَوَيْنَا فَمَا أَفْلَحْنَ وَلاَ أَنْجَحْنَ  

The Prophet ﷺ cauterized Sa’d b. Mu’adh from the wound of an arrow.  

أَنَّ النَّبِيَّ ﷺ كَوَى سَعْدَ بْنَ مُعَاذٍ مِنْ رَمِيَّتِهِ