Sahih al-Bukhari 7079
صحيح البخاري#7079SahihNarrated Ibn `Abbas:The Prophet (ﷺ) said, "Beware! Do not renegade as (disbelievers) after me by striking (cutting) the necks of one another
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: 92:30