Sayyiduna Umar (may Allah be pleased with him) narrates that when the Messenger of Allah (peace and blessings be upon him) separated himself from his pure wives (for one month), I said, "O Messenger of Allah, you have stayed in the upper room for twenty-nine days (the month has not yet been completed)." So the Messenger of Allah (peace and blessings be upon him) said: "Indeed, a month can also be of twenty-nine days."