Abdullah bin Umar (may Allah be pleased with them both) narrates that he divorced his wife during her menstruation in the time of the Messenger of Allah (peace and blessings be upon him). Umar (may Allah be pleased with him) mentioned this to the Prophet (peace and blessings be upon him), so he (peace and blessings be upon him) said: Instruct him to take her back, then when she becomes pure or becomes pregnant, then divorce her. Yusuf has used the word "asked" instead of "mentioned."