Sahih Bukhari

Narrated Said bin Jubair: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