Hazrat Abdullah bin Ja'far narrates that Hazrat Ali (may Allah be pleased with him) said to me: Shall I not teach you a few words which I have not even taught to Hasan and Husain? When you ask for something and you wish to succeed in it, then first recite these words! There is no deity except Allah, He is alone, He has no partner, He is Most High, Most Great. There is no deity except Allah, He is alone, He has no partner, He is Most Forbearing, Most Generous. Then ask for your need.