Sahih Bukhari | Volume 1 | Hadith Number 781

Narrated by 'Aisha
The Prophet used to say frequently in his bowing and prostrations "Subhanaka- Allahumma Rabbana Wabihamdika, Allahumma Ighfir-li" (I honour Allah from all what (unsuitable things) is ascribed to Him, O Allah! Our Lord! All praises are for You. O Allah! Forgive me). In this way he was acting on what was explained to him in the Holy Qur'an.