Narrated to us Abu Bakr ibn Abi Shaybah and Abu Kurayb, both saying: narrated to us Abu Mu'awiyah, from al-A'mash, from al-Musayyab, from Tamim ibn Tarafah, from Jabir ibn Samurah, who said: The Messenger of Allah (peace and blessings be upon him) said: "People who raise their eyes to the sky in prayer must cease doing so, or else their sight will not return to them."