Musannaf Ibn Abi Shayba 37:424

'Affan narrated to us, he said: Hammad bin Salamah narrated to us, from 'Ali bin Zayd, from Abu Nadrah, from Abu Sa'id, that the Messenger of Allah (may Allah bless him and grant him peace) said to Ibn Sayyad: "What do you see?" He said: "I see a throne upon the water, and around it are snakes." The Messenger of Allah (may Allah bless him and grant him peace) said: "That is the throne of Iblis."