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." (IT)
English reference (IT): Vol. 3, Book 12, Hadith 2176 (IT)
Arabic reference (IT): Book 12, Hadith 2260 (IT)