Sahih Bukhari Volume 2, Book 26, Hadith Number 804.

Narated By ‘Abdur-Rahman bin Yazid : When ‘Abdullah, reached the big Jamra (i.e. Jamrat-ul-Aqaba) he kept the Ka’ba on the left side and Mina on his right side and threw seven pebbles (at the Jamra) and said, “The one on whom Surat-al-Baqara was revealed (i.e. the Prophet) had done the Rami similarly.”