The Prophet (ﷺ) used to say frequently in his bowing and prostrations "Subhanaka l-lahumma Rabbana wa bihamdika, Allahumma ghfir li" (Exalted Are you O Allah our Lord, and by Your praise he was acting on what was explained to him in the Holy Qur'an.
Sahih al-Bukhari Book 10, Hadith 212
← Previous Hadith The Prophet (ﷺ) said, "I have been ordered to prostrate on seven (bones) and not to tuck up the hair or garment."

Sahih al-Bukhari Book 10, Hadith 211 Next Hadith → Once Malik bin Huwairith said to his friends, "Shall I show you how Allah's Messenger (ﷺ) used to offer his prayers?" And it was not the time for any of the compulsory congregational prayers. So he stood up (for the prayer) bowed and said the Takbir, then he raised his head and remained standing for a while and then prostrated and raised his head for a while (sat up for a while). He prayed like our Sheikh `Amr Ibn Salama. (Aiyub said, "The latter used to do a thing which I did not see the people doing i.e. he used to sit between the third and the fourth rak`a). Malik bin Huwairith said, "We came to the Prophet (after embracing Islam) and stayed with him. He said to us, 'When you go back to your families, pray such and such a prayer at such and such a time, pray such and such a prayer at such and such a time, and when there is the time for the prayer then only of you should pronounce the Adhan for the prayer and the oldest of you should lead the prayer."

Sahih al-Bukhari Book 10, Hadith 213