including 10 muharam

Bukhari :: Book 3 :: Volume 31 :: Hadith 116
Narrated Ibn 'Umar:

The Prophet observed the fast on the 10th of Muharram ('Ashura), and ordered (Muslims) to fast on that day, but when the fasting of the month of Ramadan was prescribed, the fasting of the 'Ashura' was abandoned. 'Abdullah did not use to fast on that day unless it coincided with his routine fasting by chance.



Bukhari :: Book 3 :: Volume 31 :: Hadith 181
Narrated Ar-Rubi' bint Mu'awadh:

"The Prophet sent a messenger to the village of the Ansar in the morning of the day of 'Ashura' (10th of Muharram) to announce: 'Whoever has eaten something should not eat but complete the fast, and whoever is observing the fast should complete it.' "She further said, "Since then we used to fast on that day regularly and also make our boys fast. We used to make toys of wool for the boys and if anyone of them cried for, he was given those toys till it was the time of the breaking of the fast."


Bukhari :: Book 5 :: Volume 58 :: Hadith 172
Narrated 'Aisha:

'Ashura' (i.e. the tenth of Muharram) was a day on which the tribe of Quraish used to fast in the pre-lslamic period of ignorance. The Prophet also used to fast on this day. So when he migrated to Medina, he fasted on it and ordered (the Muslims) to fast on it. When the fasting of Ramadan was enjoined, it became optional for the people to fast or not to fast on the day of Ashura.


Muslim :: Book 6 : Hadith 2526
Hakam b. al-'Araj reported: I went to Ibn 'Abbas (Allah be Pleased with both of them) and he was reclining using his mantle as a pillow near the fountain of Zamzam. I said to him: Tell me about fasting on Ashura. He said: When you see the new moon of Muharram then count the (days) and observe fast on the 9th. I said to him: Is it how the Messenger of Allah (may peace be upon him) observed the fast? He said: Yes.