Day of Ashura
Overview
 
The Day of Ashura is on the 10th day of Muharram
Muharram
Muharram is the first month of the Islamic calendar. It is one of the four sacred months of the year in which fighting is prohibited...

 in the Islamic calendar
Islamic calendar
The Hijri calendar , also known as the Muslim calendar or Islamic calendar , is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to date events in many Muslim countries , and used by Muslims everywhere to determine the proper day on which to celebrate Islamic...

 and marks the climax of the Remembrance of Muharram.

It is commemorated by Shia Muslims as a day of mourning for the martyrdom of Husayn ibn Ali
Husayn ibn Ali
Hussein ibn ‘Alī ibn Abī Ṭālib ‎ was the son of ‘Alī ibn Abī Ṭālib and Fātimah Zahrā...

, the grandson of the Islamic Prophet Muhammad
Muhammad
Muhammad |ligature]] at U+FDF4 ;Arabic pronunciation varies regionally; the first vowel ranges from ~~; the second and the last vowel: ~~~. There are dialects which have no stress. In Egypt, it is pronounced not in religious contexts...

 at the Battle of Karbala
Battle of Karbala
The Battle of Karbala took place on Muharram 10, in the year 61 of the Islamic calendar in Karbala, in present day Iraq. On one side of the highly uneven battle were a small group of supporters and relatives of Muhammad's grandson Husain ibn Ali, and on the other was a large military detachment...

 on 10 Muharram
Muharram
Muharram is the first month of the Islamic calendar. It is one of the four sacred months of the year in which fighting is prohibited...

 in the year 61 AH
Islamic calendar
The Hijri calendar , also known as the Muslim calendar or Islamic calendar , is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to date events in many Muslim countries , and used by Muslims everywhere to determine the proper day on which to celebrate Islamic...

 (October 2, 680 CE). According to Sunni Muslim tradition
Sunnah
The word literally means a clear, well trodden, busy and plain surfaced road. In the discussion of the sources of religion, Sunnah denotes the practice of Prophet Muhammad that he taught and practically instituted as a teacher of the sharī‘ah and the best exemplar...

, Muhammad fasted on this day and asked other people to fast.
 
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