It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: No townsman should sell the goods of a villager, nor should he deceive in a sale, nor should a man send his marriage proposal over the proposal of his brother, nor should he sell over the sale of his brother, and no woman should demand the divorce of her sister (whether real or religious) so that she may gather what is in her bowl or vessel for herself; rather, she should marry, for her sustenance is also the responsibility of Allah.