Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) narrates that when the Messenger of Allah (peace and blessings be upon him) walked, he would lean forward, as if descending from a high place towards a slope.
Hadith Referenceشمائل ترمذي / باب ما جاء فى مشية رسول الله صلى الله عليه وسلم / 124