Abu Musa (RA) reported: The Messenger of Allah (SW) 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 (SW) said, “(Recite) `La hawla wa la quwwata illa billah’ (There is no change of a condition nor power except by Allah).”
[Al-Bukhari and Muslim].