'The Prophet (SAWA) was once in 'Arafa and 'Ali (A.S) was facing him. He then said to him, Ali, come closer to me and place your five [fingers of your hand] on my five. O 'Ali, you and I have been created from one tree. I am its root and you are its trunk. Hasan and Husayn are its branches. Whoever clings onto any of its branches, Allah will make him enter Paradise.'