Sahih al-Bukhari 6300
Sahih al-Bukhari · Book 79: Asking Permission · Circumcision at an old age, and pulling out armpit hair
وَقَالَ ابْنُ إِدْرِيسَ عَنْ أَبِيهِ ، عَنْ أَبِي إِسْحَاقَ ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ ، عَنِ ابْنِ عَبَّاسٍ ، قُبِضَ النَّبِيُّ صلى الله عليه وسلم وَأَنَا خَتِينٌ.
Sa'id ibn Jubair said, "Ibn 'Abbas said, 'When the Prophet (ﷺ) died, I had already been circumcised.' "