Sunan Ibn Majah, Chapter: The Chapters of Establishing the Prayer and the Sunnah Regarding Them

"When the Prophet (saw) stood up to offer a prescribed prayer, he said Allahu Akbar and raised his hands until they were parallel to his shoulders. When he wanted to bow he did likewise; when he raised his head from bowing he did likewise; and when he stood up after the two prostrations he did likewise."* (Hasan) *Sindi said: "It is as if they abandoned that because of it contradicting the popular narrations." Azimabadi (Awnul-Mabud) said: "The meaning of 'the two prostrations' is two Rakahs without a doubt, as is reported in the following narrations. This is what was said by the scholars among the Muhadithin and the Fuqaha', except for Khattabi."