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. "
Reference: Sahih al-Bukhari 6299 In-book : Book 79, Hadith 71 USC-MSA web (English) : Vol. 8, Book 74, Hadith 313 (deprecated)
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