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) Messenger of Allah ﷺ was riding his mule. Messenger of Allah ﷺ said, "You are not calling upon a deaf or an absent one." and added, "O Abu Musa (or, O ʿAbdullah)! Shall I tell you a sentence from the treasure of Paradise?" I said, "Yes." He said, "La haul a wala quwwata illa billah,"  

أَخَذَ النَّبِيُّ ﷺ فِي عَقَبَةٍ أَوْ قَالَ فِي ثَنِيَّةٍ قَالَ فَلَمَّا عَلاَ عَلَيْهَا رَجُلٌ نَادَى فَرَفَعَ صَوْتَهُ لاَ إِلَهَ إِلاَّ اللَّهُ وَاللَّهُ أَكْبَرُ قَالَ وَرَسُولُ اللَّهِ ﷺ عَلَى بَغْلَتِهِ قَالَ فَإِنَّكُمْ لاَ تَدْعُونَ أَصَمَّ وَلاَ غَائِبًا ثُمَّ قَالَ يَا أَبَا مُوسَى أَوْ يَا عَبْدَ اللَّهِ أَلاَ أَدُلُّكَ عَلَى كَلِمَةٍ مِنْ كَنْزِ الْجَنَّةِ قُلْتُ بَلَى قَالَ لاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ