The Prophet (ﷺ) forbade the meeting (of caravans) on the way and the selling of goods by an inhabitant of the town on behalf of a desert dweller.
Sahih al-Bukhari Book 34, Hadith 113
← Previous Hadith We were forbidden that a town dweller should sell goods of a desert dweller.

Sahih al-Bukhari Book 34, Hadith 112 Next Hadith → I asked Ibn `Abbas, "What is the meaning of, 'No town dweller should sell (or buy) for a desert dweller'?" Ibn `Abbas said, "It means he should not become his broker."

Sahih al-Bukhari Book 34, Hadith 114