Question

why taasuaa is important for shia?

Answer 1

I can't understand what u are asking

Answer 2

There are two days that are so significant for Shiite as "Taasuaa/تاسوعا And عاشورا/Ashura" ... Actually usually they use and name these two days successive. (I am aware that Imam Hussein martyred at the tenth day of Moharam as Ashura), but I wonder what the importance of Taasuaa or تاسوعا is?