Abbas bin Sahl reported,

Abu Humayd, Abu Usayd, Sahl bin Saad, and Muhammad bin Maslama gathered together and discussed the prayer of the Messenger of Allah ﷺ.Abu Humayd said, "I am the most knowledgeable among you about the prayer of the Messenger of Allah ﷺ."He then mentioned part of this account, saying, "He bowed and placed his hands on his knees as though gripping them, keeping his arms taut and away from his sides. Then he prostrated, pressing his nose and forehead firmly to the ground, holding his arms away from his sides, and placing his palms level with his shoulders. Then he raised his head until every bone returned to its place, and continued in this manner until he finished. Then he sat, spreading out his left leg beneath him and turning the front of his right foot toward the qiblah. He placed his right palm on his right knee and his left palm on his left knee, and pointed with his finger."

حدثنا أحمد بن حنبل حدثنا عبد الملك بن عمرو أخبرني فليح

حدثني عباس بن سهل قال

اجتمع أبو حميد وأبو أسيد وسهل بن سعد ومحمد بن مسلمة فذكروا صلاة رسول الله ﷺ فقال أبو حميد أنا أعلمكم بصلاة رسول الله ﷺ فذكر بعض هذا قال ثم ركع فوضع يديه على ركبتيه كأنه قابض عليهما ووتر يديه فتجافى عن جنبيه قال ثم سجد فأمكن أنفه وجبهته ونحى يديه عن جنبيه ووضع كفيه حذو منكبيه ثم رفع رأسه حتى رجع كل عظم في موضعه حتى فرغ ثم جلس فافترش رجله اليسرى وأقبل بصدر اليمنى على قبلته ووضع كفه اليمنى على ركبته اليمنى وكفه اليسرى على ركبته اليسرى وأشار بأصبعه