Sahih al-Bukhari 4982
صحيح البخاري#4982SahihNarrated Anas bin Malik:Allah sent down His Divine Inspiration to His Apostle continuously and abundantly during the period preceding his death till He took him unto Him. That was the period of the greatest part of revelation; and Allah's Messenger (ﷺ) died after that
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: 66:4