The uprising of Imam Hussein (AS) saved Islam from the danger of elimination and destruction, and throughout history preserved the survival of Islam and Shiism; Thus, the revival of Allah,s religion was one of his most important goals, and although Imam Hussein and his loyal and faithful companions were martyred, by doing so, they prevented the destruction of the achievements of the Prophetic Movement (PBUH) and saved the Muslims from astonishment and misguidance.
source : erfan.ir