Entire year of sins wiped out
The Prophet (Sallallahu Alaihi Wasallam) said:Fasting the day of Ashura, I hope from Allah He will expiate or remove the sins of the year that came before. (Muslims)
The Scholars have explained that the sins that are expiated are the minor sins. So all of our good deeds, that is the salah, each obligatory prayer, fasting the month of Ramadhan, and so on, all of these expiate the minor sins.
So inshallah, for fasting one single day, ones whole year of sins is wiped away. So it is really an amazing blessing from Allah. It is something we cannot afford to miss out on for we May not be alive to benefit from such a good deed again as life is uncertain and on the day of judgement we will beg each other for a single good deed for we will all be short of good deeds on that day.
So Let Us grab all the good deeds we can now whilst we are still alive!