كتاب الصلاة
2  
The Book on Salat (Prayer)
(78)
Chapter: What Has Been Related About Him (pbuh) holding His Forearms Away From His Sides While Bowing.
(78)
باب مَا جَاءَ أَنَّهُ يُجَافِي يَدَيْهِ عَنْ جَنْبَيْهِ فِي الرُّكُوعِ
Jami` at-Tirmidhi 260
Abbas bin Sahl [bin Sa'd] narrated:
"Abu Humaid, Abu Usaid, Sahl bin Sa'd, and Muhammad bin Maslamah were once together and they were mentioning the Salat of Allah's Messenger. Abu Humaid said: 'I am the most knowledgeable among you of the Salat of Allah's Messenger: Allah's Messenger would bow and place his hands on his knees as if he was grasping them, and he would draw his forearms to hold them away from his sides.'"
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، بُنْدَارٌ حَدَّثَنَا أَبُو عَامِرٍ الْعَقَدِيُّ، حَدَّثَنَا فُلَيْحُ بْنُ سُلَيْمَانَ، حَدَّثَنَا عَبَّاسُ بْنُ سَهْلِ بْنِ سَعْدٍ، قَالَ اجْتَمَعَ أَبُو حُمَيْدٍ وَأَبُو أُسَيْدٍ وَسَهْلُ بْنُ سَعْدٍ وَمُحَمَّدُ بْنُ مَسْلَمَةَ فَذَكَرُوا صَلاَةَ رَسُولِ اللَّهِ صلى الله عليه وسلم ‏.‏ فَقَالَ أَبُو حُمَيْدٍ أَنَا أَعْلَمُكُمْ بِصَلاَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَكَعَ فَوَضَعَ يَدَيْهِ عَلَى رُكْبَتَيْهِ كَأَنَّهُ قَابِضٌ عَلَيْهِمَا وَوَتَّرَ يَدَيْهِ فَنَحَّاهُمَا عَنْ جَنْبَيْهِ ‏.‏ قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ ‏.‏ قَالَ أَبُو عِيسَى حَدِيثُ أَبِي حُمَيْدٍ حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏ وَهُوَ الَّذِي اخْتَارَهُ أَهْلُ الْعِلْمِ أَنْ يُجَافِيَ الرَّجُلُ يَدَيْهِ عَنْ جَنْبَيْهِ فِي الرُّكُوعِ وَالسُّجُودِ ‏.‏
Grade: Hasan (Darussalam)
Reference : Jami` at-Tirmidhi 260
In-book reference : Book 2, Hadith 112
English translation : Vol. 1, Book 2, Hadith 260