#636 636 - Abu Dawud narrated to us, Hammad bin Zayd, Hisham, and Mahdi narrated to us; Hammad and Mahdi said: from Ghaylan bin Jarir, and Hisham: from Qatadah, from Ghaylan, from Abdullah bin Ma'bad al-Zimmani, from Abu Qatadah, that a Bedouin asked the Messenger of Allah (saw) about his fasting, and he became angry until it was visible on his face. So Umar bin al-Khattab (ra) stood up and said: "We are pleased with Allah as our Lord, with Islam as our religion, and with you as our Prophet. I seek refuge in Allah from the anger of Allah and the anger of His Messenger." Umar continued repeating that until he calmed down. Then he said: "O Messenger of Allah, what do you say about a man who fasts for a whole lifetime?" The Messenger of Allah (saw) said: "He has neither fasted nor broken his fast," or he said: "He did not fast and he did not break his fast." He said: "O Messenger of Allah, what about one who fasts for two days and breaks his fast for one day?" He said: "And who is capable of that?" He said: "O Messenger of Allah, what about one who breaks his fast for two days and fasts for one day?" He said: "I wish that I were given the strength for that." He said: "O Messenger of Allah, what do you say about fasting on Mondays?" He said: "That is the day on which I was born, and on which [revelation] was sent down to me." They said: "O Messenger of Allah, what do you say about a man who fasts one day and breaks his fast one day?" He said: "That is the fasting of my brother David." They said: "O Messenger of Allah, what do you say about fasting on the day of Ashura?" He said: "I seek from Allah that it should atone for the [sins of the] year." He said: "O Messenger of Allah, what do you say about fasting on the day of Arafah?" He said: "I seek from Allah (azwj) that it should atone for the year before it and the year after it."