Sahih Bukhari
Pilgrimmage (Hajj)
Volume: 002 / Book Number: 026 / Hadith Number: 727
Narrated 'Urwa:
Usama was asked in my presence, "How was the speed of (the camel of) Allah's Apostle while departing from 'Arafat during the Hajjatul Wada?" Usama replied, "The Prophet proceeded on with a modest pace, and when there was enough space he would (make his camel) go very fast."