Ali bin Abi Taalib Radiyallahu 'Anhu' says:
"When Rasulullah Sallallahu Alayhi Wasallam walked he bent slightly forward as if he was descending from a high place".This has been explained in the previous ahaadith. (JA)
English reference (JA): Book 18, Hadith 118 (JA)
Arabic reference (JA): Book 19, Hadith 125 (JA)