Musnad Ahmad 289:7

Yazid ibn Harun narrated to us, Hammad ibn Salamah informed us, from Ya'la ibn 'Ata, from Waki' ibn 'Adas, from his paternal uncle Abu Razin, who said: I said: "O Messenger of Allah, where was our Lord, the Mighty and Majestic, before He created His creation?" He said: "He was in a cloud (*'ama'*), there was no air beneath it, and no air above it. Then He created His Throne upon the water."