Sahih al-Bukhari 2443
صحيح البخاري#2443SahihNarrated Anas bin Malik:Allah's Messenger (ﷺ) said, "Help your brother, whether he is an oppressor or he is an oppressed one
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: 46:4