Sayyiduna Zayd bin Ishaq al-Ansari (may Allah be pleased with him) said: The Prophet of Allah (peace and blessings be upon him) caught up with me at the door of the mosque and said: "Shall I not tell you of a treasure from among the treasures of Paradise?" I said: "Certainly, O Prophet of Allah!" He said: "La hawla wa la quwwata illa billah (There is no might and no power except with Allah)."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5132