On his death bed, Abu Bakr nominated Umar as his successor. Ali not only took the oath of allegiance to Umar but also married his daughter Umm Kulthum to Umar, and quite contrary to the biased allegations, perfect cordiality prevailed between Ali and Umar. Ali held the office of the Chief Justice. He acted as the principal Counselor of Umar. He acted as Chief Secretary as well. The services of Ali were highly appreciated by Umar. In these circumstances the views expressed in some quarters that Umar was the worst enemy of Ali is far from truth and cannot be accepted.