Sahih al-Bukhari 6874
صحيح البخاري#6874SahihNarrated `Abdullah:The Prophet (ﷺ) said, "Whoever carries arms against us, is not from us
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: 87:13