Sahih al-Bukhari 3751
صحيح البخاري#3751SahihNarrated Ibn `Umar:Abu Bakr used to say, "Look after Muhammad (ﷺ) in (looking after) his family
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: 62:96