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.
قَالَ رَسُولُ اللَّهِ ﷺ اخْتَتَنَ إِبْرَاهِيمُ النَّبِيُّ عَلَيْهِ السَّلاَمُ وَهُوَ ابْنُ ثَمَانِينَ سَنَةً بِالْقَدُومِ