the Prophet forbade a town-dweller to sell for a desert- dweller, even if he was his father or brother. (Sahih )
Sunan an-Nasa'i Book 44, Hadith 44
← Previous Hadith "The Messenger of Allah forbade meeting (the traders on the way) a Muhajhir selling for a Bedouin, keeping the milk in the udder of an animal (so as to increase its price), artificially inflating prices, a man to urge the cancellation of sale already agreed upon and a woman to ask that her sister (in faith) be divorced."

Sunan an-Nasa'i Book 44, Hadith 43 Next Hadith → "It was forbidden to us for a town-dweller to sell for a desert-dweller, even if he was his father or brother." (Sahih )

Sunan an-Nasa'i Book 44, Hadith 45