Sahih Bukhari
Sahih Bukhari Volume 002, Book 026, Hadith Number 674.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 26. Pilgrimmage (Hajj)
Narated By Abdullah bin Umar : The Prophet did Ramal in (first) three rounds (of Tawaf), and walked in the remaining four, in Hajj and Umra.