Narrated Ibn Abbas: Allah's Apostle performed Tawaf (of the Kaba) ending a camel (at that time the Prophet had foot injury). Whenever he came to the Corner (having the Black Stone) he would point out towards it with a thing in his hand and say, "AllahuAkbar."
— Sahih Bukhari, Volume 2, Book 26: Pilgrimmage (Hajj), Hadith #697
