Allah's Messenger (ﷺ) said "The Prophet) Abraham circumcised himself after he had passed the age of eighty years and he circumcised himself with an adze."
Sahih al-Bukhari Book 79, Hadith 70
← Previous Hadith The Prophet (ﷺ) said "Five things are in accordance with Al Fitra (i.e. the tradition of prophets): to be circumcised, to shave the pelvic region, to pull out the hair of the armpits, to cut short the moustaches, and to clip the nails.'

Sahih al-Bukhari Book 79, Hadith 69 Next Hadith → Ibn 'Abbas was asked, "How old were you when the Prophet (ﷺ) died?" He replied. "At that time I had been circumcised." At that time, people did not circumcise the boys till they attained the age of puberty. Sa'id bin Jubair said, "Ibn 'Abbas said, 'When the Prophet died, I had already been circumcised. "

Sahih al-Bukhari Book 79, Hadith 71