(41) باب مِنْ فَضَائِلِ إِبْرَاهِيمَ الْخَلِيلِ صلى الله عليه وسلم
Abu Huraira reported Allah's Messenger (ﷺ) as having said that Ibrahim (as) circumcised himself with the help of an adze when he was eighty years old.
Reference: Sahih Muslim 2370
In-book reference: Book 43, Hadith 199
USC-MSA web (English) reference(deprecated numbering scheme): Book 30, Hadith 5844