When Imam Ali (PBUH), was leaving this world, he gave the hand of every one of his family members to Imam Hasan (PBUH). He even gave the hand of Imam Husain in the hand of Hasan, and said now he is your Imam. But he gave the hand of Abbas to Husain. He said Abbas, Hasan and Hussain are the children of the Prophet, you are my son! Abbas, you will represent me in Karbala. Abbas, Husain is your Mawla. As long as you are alive, nothing should happen to Husain".