It is narrated from Anas bin Sirin, he says: I asked Sayyiduna Ibn Umar (may Allah be pleased with them both) about his wife whom he had divorced during the time of the Messenger of Allah (peace and blessings be upon him). He said: I divorced her while she was in her menstrual period, then I informed Sayyiduna Umar (may Allah be pleased with him), and he mentioned this matter before the Noble Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) said: Order him to take her back, then when she becomes pure from her menstruation, he may divorce her in accordance with the Sunnah during a period of purity. I did exactly that. Anas bin Sirin said: I asked Ibn Umar (may Allah be pleased with them both) whether the divorce you gave during menstruation was counted. He said: Why would I not count it? If I became helpless and acted foolishly, (do you think that divorce would not be counted)?