Musnad Ahmad 30:3388

Yazid narrated to us, Muhammad ibn ‘Amr informed us, from Abu Salamah, from Abu Hurairah, that he used to lead them in prayer, and he would say the takbir whenever he raised [his head] and whenever he lowered [his body]. When he finished, he said: "I am the one among you whose prayer most resembles the prayer of the Messenger of Allah, may Allah bless him and grant him peace."