It is narrated from Abbas bin Sahl that Muhammad bin Maslamah, Abu Usaid, Abu Humayd, and Sahl bin Sa’d gathered together, and the prayer of the Messenger of Allah (peace be upon him) was mentioned. Abu Humayd said: I have the most knowledge among you all about the prayer of the Messenger of Allah (peace be upon him). When the Messenger of Allah (peace be upon him) would stand (for prayer), he would say Allahu Akbar and raise his hands. Then when he would go into ruku’, he would raise his hands, then perform ruku’, and place both his palms on both his knees, as if he (peace be upon him) was holding them, and he would keep both his elbows away from his sides, and (in ruku’) he (peace be upon him) would neither lower his head nor raise it.