Laa hawla wa laa quwwata ‘illaa billaah
There is no power and no might except by Allah. The Messenger of Allah (صلى الله عليه وسلم (said to me, “Shall I not guide you to a treasure from the treasures of Jannah?” I said: “Yes, O Messenger of Allah!” Thereupon he (صلى الله عليه وسلم (said, “(Recite) ‘Laa hawla wa la quwwata ‘illa billaah'”
[Bukhari and Muslim]