al-Aswad bin Hilal al-Maharbi الأسود بن هلال المحاربي · The Book of Fasting

"The Messenger of Allah used to be keen to fast on Mondays and Thursday."

"The Messenger of Allah said to me: 'Read the Qur'an in a month.' I said: 'I am able to do more than that. ' And I kept asking him until he said: 'In five days.' And he said: 'Fast three days a month.' I said: 'I am able to do more than that.' And 'Observe thhe most beloved of fasting to Allah, the Mighty and Sublime, the fast one day and not the next." (Suahih).

"The Messenger of Allah heard that I was fasting continually and praying all night." Either he sent for him, or he happened to meet him and he said: "Have I not been told that you fast and never break your fast, and you pray all night? Do not do that, for do that, for your eyes should have a share, your self should have a share, and your family should have a share. Fast and break your fast; pray and…

"I entered with Zaid upon 'Abdullah bin Amr and he narrated: 'The Messenger of Allah was told about my fasting, so the entered upon me and I gave him an average-sized leather pillow that was stuffed with palm fibvers. He sat in the ground with the pillow between myself and him, and said: "Whill it not be sufficient for you to fast three days each months?" I said: O Messenger of Allah! He said: "O Messenger of Allah!" He said:…