The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 2922
Umm Salama reported: I made a complaint to Allah's Messenger (may peace be upon him) of my ailment, whereupon be said: Circumambulate behind the people while riding. She said: So I circumambulated and Allah's Messenger (may peace be upon him) was at that time praying towards the side of the House and he was reciting al-Tur and a Book Inscribed (i. e. Sura Iii. of the Qur'un).