Imam Ali (AS) said, The devout companions of the Messenger of Allah (s) know that I never disobeyed Allah, the Glorified, or His Prophet for even a moment; and I supported him in situations where the valiant ones retreated and when the feet were slow in moving forward with courage – Allah honoured me with [all] this. I spared no effort in his obedience, may the blessings of Allah be upon him, and I fought his enemies with all my might, and I put my life on the line in order to protect him, and he divulged to me from his knowledge that which he did not divulge to anyone other than me.