It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said: A City-dweller should not sell for a Bedouin.
It was narrated from Jabir bin 'Abdullah that the Prophet (ﷺ) said: A city-dweller should not sell for a Bedouin. Leave people to (engage in trade) and Allah will grant them provision through one another.
Ibn Tawus narrated from his father that Ibn 'Abbas said: The Messenger of Allah (ﷺ) forbade a city-dweller to sell for a Bedouin. (Sahih)I (Tawus) said to Ibn 'Abbas: What is meant by the words: 'A city-dweller selling for a Bedouin?' He said: He should not be a broker for him.