Hadith 817:1
Waki’ narrated to us, ‘Abbad ibn Rashid narrated to us, from al-Hasan, Ahmar, a companion of the Messenger of Allah (may Allah bless him and grant him peace), narrated to us, saying: "We used to feel pity for the Messenger of Allah (may Allah bless him and grant him peace) because of how he would keep his arms away from his sides when he prostrated."
حدثنا وكيع، حدثنا عباد بن راشد، عن الحسن، حدثنا أحمر، صاحب رسول الله صلى الله عليه وسلم، قال: " إن كنا لنأوي لرسول الله صلى الله عليه وسلم مما يجافي بيديه عن جنبيه إذا سجد "