Sahih al-Bukhari 4466
صحيح البخاري#4466SahihNarrated `Aisha:Allah's Apostle died when he was sixty-three years of age
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 64:481