Abu Huraira reported Messenger of Allah ﷺ as having said that Ibrahim (as) circumcised himself with the help of an adze when he was eighty years old. (Using translation from Muslim 2370)
قَالَ رَسُولُ اللهِ ﷺ اخْتَتَنَ إِبْرَاهِيمُ وَهُوَ ابْنُ ثَمَانِينَ سَنَةً بِالْقَدُومِ