A sunni brother mentioned: Imam Hussein (A.S) was truthful in his determination to change the munkar, but he was adviced by the likes of Ibn Abbas and Ibn Umar that he was overoptimistic with the people of Iraq and their help. Hussein, being a human who is not ma3soom like the prophets, exercised his Ijtihad. Based on what is even reported by the Sunnis, Imam Hussein knew that he will be killed in Ashura in Karbala, and yet he went forward. Not only Imam Hussein, but also all the Prophets of God knew about the detail of this catastrophe. From Adam, to Noah, to Moses, to Zakariyya, to Yahya (John), to Muhammad, all cried for Imam Hussein (A.S) and remembered him on the day of Ashura. Imam Hussein, before he leaves Medina, saw the Messenger of Allah in dream who told him: "Verily Allah willed to see you martyred. Verily Allah willed to see your family captives" He knew that he will be killed where and how. There was no error in his part or what you ca