It was narrated that Qais bin Abi Gharazah said: “At the time of the Messenger of Allah صلی اللہ علیہ وآلہ وسلم we used to be called SamasIr (brokers). The Messenger of Allah صلی اللہ علیہ وآلہ وسلم came to us when we were selling and called us by a name that was better than that. He said: ‘merchants (Tujjar), this selling involves lies and (false) oaths, so mix some charity with it.” (Sahih)