Sayyiduna Abu Hurairah (may Allah be pleased with him) reports: The Messenger of Allah (peace and blessings be upon him) said: "Do not mix with fraud, and no man should sell over the sale of his Muslim brother, and no townsman should sell on behalf of a villager, and no man should propose over the proposal of his Muslim brother, and no woman should demand the divorce of her Muslim sister so that she may cause what is in her vessel to be spilled."