عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ أَكْثِرُوا مِنْ قَوْلِ لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ فَإِنَّهَا كَنْزٌ مِنْ كُنُوزِ الْجَنَّةِ
It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, said: Frequently say "La hawla wa la quwwata illa billah" (There is no power and no strength except with Allah), for it is one of the treasures of Paradise.