Sahih al-Bukhari 4870
صحيح البخاري#4870SahihNarrated `Abdullah bin Masud:The Prophet (ﷺ) used to recite: "Fahal-min-Maddakir (then is there any that will receive admonition?)
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: 65:391