Imam Hussein was the grandson of the Prophet Muhammad and the son of Imam Ali and Fatimah. He is a central figure in Islam, particularly in Shia Islam, where he is revered for his bravery and commitment to justice. Hussein is best known for his role in the Battle of Karbala in 680 CE, where he stood against the oppressive rule of Yazid, refusing to pledge allegiance to a tyrant. The martyrdom of Imam Hussein at Karbala is commemorated annually during the month of Muharram, especially on the day of Ashura. His sacrifice symbolizes the struggle against injustice and the importance of standing up for one's beliefs, inspiring millions around the world to seek justice and truth.