Sahih al-Bukhari 6844
صحيح البخاري#6844SahihNarrated `Aisha:Abu Bakr came to me while Allah's Messenger (ﷺ) was sleeping with his head on my thigh. Abu Bakr said (to me), "You have detained Allah's Messenger (ﷺ) and the people, and there is no water in this place." So he admonished me and struck my flanks with his hand, and nothing could stop me from moving except the reclining of Allah's Messenger (ﷺ) (on my thigh), and then Allah revealed the Divine Verse of Tayammum
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: 86:66