Sahih al-Bukhari 2161
صحيح البخاري#2161SahihNarrated Anas bin Malik:We were forbidden that a town dweller should sell goods of a desert dweller
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: 34:112