Narrated ‘Aisha:
The Prophet used to say in his bowing and prostrations, “Subhanaka-Allahumma Rabbana wa-bihamdika Allahumma-ighfirli.’ (I honor Allah from all what (unsuitable things) is ascribed to Him. O Allah Our Lord! And all the praises are for You. O Allah! Forgive me).”
Sahih Bukhari, Volume 1, Book12, Number 760