Abu Dawud Book 4, Hadith Number 1940.
Chapter : Not known.
Narated By Abdullah ibn Umar : The Apostle of Allah (PBUH) halted on the day of sacrifice between the jamrahs (pillars at Mina) during hajj which he performed. He asked: Which is this day? They replied: This is the day of sacrifice. He said: This is the day of greater hajj.