In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Abu Moosaa Al-Ash’aree (radiyallaahu-anhu) said, ‘’The Messenger of Allaah (sallal-laahu-alayhi-wasallam) said to me, ‘O Abdullaah Bin Qais! Shall I tell you a word which is one of the treasures of Paradise? It is [لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللهِ – (i.e. There is neither might nor power (to alternate from one state to another nor move from one thing to another) except by Allaah’s Will]. [Bukhaari 6384 & Muslim 2704]
[One of the treasures of paradise]- meaning: Its reward is great and that is paradise; and Paradise is the greatest thing sought after. This shows the virtue of the statement [لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللهِ ].
And why does it carry that reward? That is because it necessitates surrendering all of one’s affairs to Allaah, manifesting one’s inability and poverty in the presence of Allaah, and that indeed Allaah is The One Perfect in Strength and The One Fully Able to do all things (and has power over all things). It is a great statement, easy to utter and repeat on the tongue.
[An Excerpt from Tasheelul Il’haami Bi-Fiqhil Ahaadeeth Min Bulooghil Maraam’ page 335’ Vol 6’ by Shaikh Saaleh al-Fawzaan (may Allaah preserve him)].