عَنْ أَبِي مُوسَى الْأَشْعَرِيِّ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ لَهُ أَلَا أَدُلُّكَ عَلَى كَنْزٍ مِنْ كُنُوزِ الْجَنَّةِ قَالَ وَمَا هُوَ قَالَ لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ
It is narrated from Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said to him: Shall I guide you to one of the treasures of Paradise? He said: Which is that? The Prophet (peace and blessings be upon him) said: "La hawla wa la quwwata illa billah" (There is no power to avoid evil and no strength to do good except by Allah’s help).