Hadith 475
Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he said: "What is wrong with people that they raise their eyes towards the sky during prayer?" He (peace and blessings be upon him) gave a very stern warning about this until he said: "They must stop, or else their eyes will surely be snatched away."
Hadith 476
Hazrat Qatadah, may Allah have mercy on him, narrates that Sayyiduna Anas bin Malik, may Allah be pleased with him, was severely admonished by the Prophet Muhammad, peace and blessings be upon him.