Sahih Muslim Book 4, Hadith Number 758.
Chapter : The excellence of Adhin and running away of the Satan on hearing it.
Salim narrated it on the authority of his father who reported: I saw the Messenger of Allah (may peace be upon him) raising his hands apposite the shoulders at the time of beginning the prayer and before bowing down and after coming back to the position after bowing, but he did not raise them between two prostrations.