"The Salat of Messenger of Allah (was such that) when he bowed, and when he raised his head from bowing, and when he prostrated, and when he raised his head from prostration it (all) was nearly the same."  

كَانَتْ صَلاَةُ رَسُولِ اللَّهِ ﷺ إِذَا رَكَعَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ وَإِذَا سَجَدَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ السُّجُودِ قَرِيبًا مِنَ السَّوَاءِ قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ  

(Another chain) which is similar.