Sahih al-Bukhari 6092
صحيح البخاري#6092SahihNarrated `Aisha:I never saw the Prophet (ﷺ) laughing to an extent that one could see his palate, but he always used to smile only
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: 78:119