حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، وَهِشَامُ بْنُ عَمَّارٍ، وَأَبُو عُمَرَ الضَّرِيرُ قَالُوا حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ إِذَا افْتَتَحَ الصَّلاَةَ، رَفَعَ يَدَيْهِ حَتَّى يُحَاذِيَ بِهِمَا مَنْكِبَيْهِ، وَإِذَا رَكَعَ، وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ. وَلاَ يَرْفَعُ بَيْنَ السَّجْدَتَيْنِ ‏.‏
Translation
‘Abbasbin Sahl As-Sa’di said

“Abu Humaid, Abu Usaid As-Sa’di, Sahlbin Sa’d, and Muhammad bin Maslamah came together and spoke abouttheprayer of the Messenger of Allah (ﷺ). Abu Humaid said: ‘I amthemost knowledgeable of you about the prayer of the Messenger ofAllah(ﷺ). The Messenger of Allah (ﷺ) stood up and said AllahuAkbar,and raised his hands, then he raised them when he said AllahuAkbarfor Ruku’, then he stood up and raised his hands, and stoodstraightuntil every bone had returned to its place.’”