It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Shall I not teach you a word which is a treasure of Paradise and has come from beneath the Throne? That word is "La hawla wa la quwwata illa billah." Upon hearing this, Allah says: My servant has submitted and entrusted himself.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7966
Hadith Gradingحکم دارالسلام:صحيح دون قوله: «من تحت العرش» ، وهذا إسناد حسن.