"We came to Abu Mas'ud and said to him: 'Tell us about the prayer of the Messenger of Allah ﷺ.' He stood in front of us and said the takbir, then when he bowed he placed his palms on his knees and put his fingers lower than that, and he held his elbows out from his sides until every part of him had settled. Then he said: Sami' Allahu liman hamidah, Rabbana wa lakal-hamd (Allah hears those who praise Him, our Lord, and to You be the praise), then he stood up until every part of him had settled." (Using translation from Nasāʾī 1036)  

حَدِّثْنَا عَنْ صَلَاةِ رَسُولِ اللهِ ﷺ فَقَامَ بَيْنَ أَيْدِينَا فَكَبَّرَ فَلَمَّا رَكَعَ وَضْعَ رَاحَتَيْهِ عَلَى رُكْبَتَيْهِ وَجَعَلَ أَصَابِعَهُ أَسْفَلَ مِنْ ذَلِكَ وَجَافَى بِمِرْفَقَيْهِ حَتَّى اسْتَوَى كُلُّ شَيْءٍ مِنْهُ ثُمَّ قَالَ «سَمِعَ اللهُ لِمَنْ حَمِدَهُ فَقَامَ حَتَّى اسْتَوَى كُلُّ شَيْءٍ مِنْهُ»