"Allah’s Messenger (Allah bless him and give him peace) used to fast three days at the beginning of every month, and he would seldom break fast on Friday, the Day of the Congregation .”
"The Prophet said (Allah bless him and give him peace): “Works are reviewed on Monday and Thursday, so I would like my work to be reviewed while I am fasting!”
"I did not see Allah’s Messenger (Allah bless him and give him peace) fast in any month more than his fasting for Allah’s sake in Sha'ban. He used to keep fast through all but a little of Sha'ban; no indeed, he used to keep fast through all of it!”