What did the Prophet Muhammad (peace be upon him) recite when Um Salama (the wife of the Prophet) was performing Tawaf while riding behind the people?
 Narrated Um Salama:                     (the wife of the Prophet) I informed Allah's Apostle that I was ill. So he said, "Perform the Tawaf while riding behind the people." I did so, and at that time the Prophet was praying beside the Ka`ba and reciting Surat-at-Tur.