Sunan Abi Dawud Book 2, Hadith 330
A youth from the Quraish passed in front of Abu Sa’id al-Khudri who was praying. He repulsed him. He returned again. He then repulsed him for the third time. When he finished the prayer, he said: Nothing cuts off prayer; but the Messenger of Allah (ﷺ) said: Repulse as much as you can, for he is just a devil.
Abu Dawud said: If two traditions of the prophet(ﷺ) conflict, the practice of the Companions after him should be taken into consideration.
The Prophet (ﷺ) said: Nothing interrupt prayer, but repulse as much as you can anyone who passes in front of you, for he is just a devil.
I saw the Messenger of Allah(ﷺ) that when he began prayer, he used to raise his hands opposite his shoulders, and he did so when he bowed, and raised his head after bowing. Sufyan(a narrator) once said: “When he raised his head:; and after he used to say: “When he raised his head after bowing. He would not raise (his hands) between the two prostrations."