It was narrated that Qais bin Abi Gharazah said:"We used to sell in Al-Baqi, and the Messenger of Allah came to us. We used to be called Samasir (brokers) but he said: 'O merchants!' And called us by a name that was better than our name. Then he said: 'This selling involves (false) oaths and lies, so mix some charity with it

English translation · Sunan an-Nasa'i