Imam Hussein (peace be upon him) has a letter who has sent from Mecca to the heads of Kufa and declared in that letter that "it is my duty to do this movement"; Because with such a government which is at work, the religion of Allah is doomed; if Imam Hussein didn’t do that movement, the relationship of people with the religion would have been cut from his time until the day of resurrection. many people still do not know that the martyrdom of Imam was equal to the hardships that all the divine prophets had gone through for religion. The outcome of the hardships that all the divine prophets encountered, even the difficulties that the seal of the prophets went through were all on the verge of perishing and disappearing. The commander of the faithful was the guardian of the religion for a while, then Imam Hasan Mojtaba was in charge for ten years, and at the time of Imam Hussein (peace be upon him) the religion of Allah was on the brink of complete destruction and disappearance that his martyrdom saved both the religion and the Holy Quran.
source : erfan.ir
