My close friend (may Allah's peace and blessings be upon him) advised me with three: fasting three days of every month, the two Rak‘ahs of Duha, and performing Witr before I sleep
The Prophet (may Allah's peace and blessings be upon him) would not fast in any month more than he did in Sha‘bān
The Messenger of Allah (may Allah's peace and blessings be upon him) used to leave fasting in a certain month until we would think that he has not fasted at all that month; and he used to fast in another month so much that we would think he has not stopped fasting at all in that month. If one wished to see him praying at night, one could see him (in that state), and if one wished to see him sleeping at night, one could see him (in that state) too
The best (voluntary) fast in the sight of Allah is the fast of Dawūd, and the best (voluntary) prayer in the sight of Allah is the prayer of Dawūd. He used to sleep half of the night, stand to pray one third of it, and then sleep one sixth of it, and he used to fast every other day
There is no fasting superior to the fast of my brother Dawūd; fasting half of one's life by fasting one day and eating one day
The Messenger of Allah (may Allah's peace and blessings be upon him) used to strive to fast on Mondays and Thursdays
Did the Messenger of Allah (may Allah's peace and blessings be upon him) fast three days of each month?
Deeds are presented (to Allah) on Monday and Thursday. So, I like my deeds to be presented while I am fasting
No fasting counts for the one who fasts continuously. Fasting three days is like fasting the entire year