Voluntary Fasting
Narrated Ibn 'Abbas
The Messenger of Allah said: If I remain alive till the next year, I will fast on the ninth (the 9th of Muharram).
[Reported Muslim]
Narrated Ibn 'Abbas
The Messenger of Allah fasted on "Ashura" (the 10th of Muharram) and ordered that it should be fasted on.
[Agreed upon]