Musnad Ahmad 1153:1599

Yahya narrated to us, from Husayn, who said: Budayl narrated to me, from Abu al-Jawza’, from ‘Aishah: The Messenger of Allah (peace and blessings of Allah be upon him) used to begin the prayer with the takbir, and the recitation with "Praise be to Allah, Lord of the Worlds." When he bowed, he would neither raise his head nor lower it, but would keep it between that. When he raised his head from bowing, he would not prostrate until he stood upright. When he raised his head from prostration, he would not prostrate again until he sat upright. He used to say the greeting (tahiyyah) after every two rak'ahs. He used to dislike spreading his forearms like the spreading of a beast of prey. He would spread his left foot and keep his right foot upright. He used to forbid the "devil’s sitting" (on the heels), and he used to conclude the prayer with the taslim.