It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Mothers of the Believers (may Allah be pleased with them) asked the Prophet (peace and blessings be upon him) about letting the hem (of their garments) hang down. The Prophet (peace and blessings be upon him) permitted them to let the hem down by one handspan. They said that one handspan does not suffice for covering. The Prophet (peace and blessings be upon him) said: "Then make it one cubit." Thus, when any of them wanted to make a shirt, she would let it hang down by one cubit and make its hem accordingly.