What did the Prophet Muhammad (peace be upon him) say when performing the dawn prayer that his companion Amr b. Huraith heard?
 'Amr b. Huraith reported:                      I said the dawn prayer behind the Apostle of (may peace be upon him) and heard him reciting: 'Nay. I call to witness the stars, running their courses and setting" (al-Qur'an, lxxxi. 15-16) and Done of us bent his back till he completed prostration.