Musnad Ahmad 289:17

'Abd al-Rahman and Bahz narrated to us, they said: Hammad ibn Salamah narrated to us, from Ya'la ibn 'Ata, from Waki' ibn 'Udas, from his paternal uncle Abu Razin—Bahz said: al-'Uqayli—he said: I said: O Messenger of Allah—Bahz said: "Does each of us see his Lord, the Mighty and Majestic?" 'Abd al-Rahman said: "How do we see our Lord on the Day of Resurrection? And what is the sign of that in His creation?" He said: "Does not each one of you look at the moon, being alone with it?" I said: "Yes." He said: "For He is greater."