Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated from the Messenger of Allah (peace and blessings be upon him) that he (peace be upon him) forbade that a townsman should sell on behalf of a villager. The narrator said: I asked Sayyiduna Ibn Abbas (may Allah be pleased with them both): What is meant by your statement, "A townsman should not sell on behalf of a villager"? He replied: That he should not become his agent (broker).