I wanted to know the rule about salary for the day of Ashura. Should I deduct this amount from my monthly salary? If yes, where can I give that money?
Is it sufficient that I did not go to work on Ashura, but still get the salary?

As per the recommendation of Imam Jafar Sadiq as not to work spend day in mourning of imam Husain (as). If you get the salary spend it in the Aza (Majalis) of Imam Husain as