Musnad Abu Ya'la al-Mawsili 160:27

Abu Bakr ibn Abi Shaybah narrated to us, Ibn Idris narrated to us, from Isma'il, from his father, who said: My father used to pray behind Abu Hurayrah in Medina. He said: His prayer was similar to the prayer of Qays, perfecting the bowing and the prostration. It was said to Abu Hurayrah: "Was the prayer of the Messenger of Allah (may Allah bless him and grant him peace) like this?" He said: "Yes, and more complete."