Sahih al-Bukhari 1393
صحيح البخاري#1393SahihNarrated `Aisha:The Prophet (ﷺ) said, "Don't abuse the dead, because they have reached the result of what they forwarded
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: 23:147