Abu Huraira (Allah be pleased with him) reported it directly from Allah's Apostle ( صلی اللہ علیہ وسلم ): The townsman'should not sell for a man from the desert (with a view to taking advantage of his ignorance of the market conditions of the city). And Zuhair reported from the Prophet ( صلی اللہ علیہ وسلم ) that he forbade the townsman to sell on behalf of the man from the desert.
Authentic