The Messenger of Allah ﷺ used to begin the prayer with the takbir and the recitation with "All praise is due to Allah, Lord of all the worlds." When he bowed, he would neither raise his head up nor lower it down, but kept it level between the two. When he raised his head from bowing, he would not prostrate until he had stood up straight. When he raised his head from prostration, he would not prostrate again until he had sat up straight. After every two units of prayer, he would recite the tahiyyat. He would lay his left foot flat and keep his right foot upright. He forbade sitting in the manner of Satan's posture, and he forbade a man from spreading his forearms on the ground like a wild beast. He would conclude the prayer with the salutation of peace.
كان رسول الله ﷺ يستفتح الصلاة بالتكبير والقراءة بالحمد لله رب العالمين، وكان إذ ركع لم يشخص. رأسه ولم يصوبه ولكن بين ذلك، وكان إذا رفع رأسه من الركوع لم يسجد حتى يستوى قائما، وكان إذا رفع رأسه من السجدة لم يسجد حتى يستوى جالسا، وكان يقول في كل ركعتين التحية، وكان يفرش رجله اليسرى، وينصب رجله اليمنى، وكان ينهى عن عقبة الشيطان، وينهى أن يفترش الرجل ذراعيه افتراش السبع، وكان يختم الصلاة بالتسليم.
Muslim reported it in the Book of Prayer (498) via Husayn al-Muallim, from Budayl bin Maysara, from Abu Jawza, from Ayesha, and he related the hadith.His saying, "he neither raised his head nor lowered it excessively" - ishkhas means raising, and taswib means lowering, meaning he kept a balance between raising it and lowering it.His saying, "the sitting of Satan," and in another narration, "uqub" - Abu Ubayda and others explained this as referring to the forbidden posture of iqaa, which is to place one's buttocks on the ground, raise the shins, and put the hands on the ground, in the manner that a dog or other predatory animals crouch.