Musannaf Ibn Abi Shaybah

Hazrat Muhammad bin Amr bin Ata says that I saw Hazrat Abu Humaid Sa’idi with ten companions of the Messenger (peace be upon him). He said, "Shall I not describe to you the way the Messenger of Allah (peace be upon him) performed prayer?" They said, "Certainly, do so." He said, "I saw the Messenger of Allah (peace be upon him) that when he began the prayer with the opening takbeer, he raised his hands; when he went into ruku, he raised his hands; when he lifted his head from ruku, he raised his hands. Then he stood for such a duration that every bone returned to its place, then he would go down for prostration saying the takbeer."