It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him): The Messenger of Allah (peace and blessings be upon him) finished the Fajr prayer, came to the women sitting in the mosque, stood near them and said: "O assembly of women! Give charity. Despite being deficient in intellect and religion, I have not seen anyone more able to overcome a wise man than you women, and on the Day of Resurrection I saw that the majority in Hell were women. Therefore, seek nearness to Allah as much as you can." Among the women was the wife of Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him)... The narrator narrated the whole hadith. That woman said: O Messenger of Allah! What is the deficiency in our religion and intellect? He (peace and blessings be upon him) said: "The deficiency in religion that I mentioned is that when any of you menstruates, she refrains from praying by Allah's will (and this causes a deficiency in religion), and the deficiency in intellect is that the testimony of a woman is equal to half the testimony of a man."