(32) باب كَمْ سِنُّ النَّبِيِّ صلى الله عليه وسلم يَوْمَ قُبِضَ .
'A'isha reported that Allah's Messenger (ﷺ) died when he had attained the age of sixty-three. And a hadith like this had been transmitted on the authority of Sa'id b. Musayyib.
Reference: Sahih Muslim 2349 a
In-book reference: Book 43, Hadith 150
USC-MSA web (English) reference(deprecated numbering scheme): Book 30, Hadith 5797