Al-Bara,’ said that the bowing observed by the Prophet, his prostration, his sitting between the two sajdas, and when he raised his head after bowing, but not the standing and the sitting [when saying the shahada, were nearly equal.
‘Amr b. Shu'aib on his father’s authority quoted his grandfather as saying, “There is no short or long sura in al-Mufassal* which I have not heard God’s Messenger reciting when he led the people in the prescribed prayer.”
* A name applied to the latter part of the Qur’an because there are many divisions, but opinions differ about where it begins. Lane mentions the different views in his Lexicon, pp 2407 f., saying the most correct opinion is that it begins with sura 49.