The Day of Ashura

Ibn Abbas was asked about observing of fast on the day of Ashura, whereupon he said: I do not know Allah’s Messenger (may peace be upon him) singling out any day’s fast and considering it more excellent than another, except this day (the day of Ashura), and this month (the month of Ramada).” (Muslim)
The Prophet (peace and blessings of Allaah be upon him) fasted the tenth and intended to fast the ninth. Based on this, there are different ways of fasting ‘Ashoora’, the least of which is to fast the tenth only, but it is better to fast the ninth as well. The more one fasts in Muharram, the better.