(67) باب قَوْلِ لاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ
Narrated Abu Musa Al-Ash`ari:
The Prophet (ﷺ) started ascending a high place or hill. A man (amongst his companions) ascended it and shouted in a loud voice, "La ilaha illal-lahu wallahu Akbar." (At that time) Allah's Messenger (ﷺ) was riding his mule. Allah's Messenger (ﷺ) said, "You are not calling upon a deaf or an absent one." and added, "O Abu Musa (or, O `Abdullah)! Shall I tell you a sentence from the treasure of Paradise?" I said, "Yes." He said, "La haul a wala quwwata illa billah,"
Reference: Sahih al-Bukhari 6409
In-book reference: Book 80, Hadith 104
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 75, Hadith 418