Musnad Ahmad 31:530

Harun ibn Ma'ruf narrated to us, Ibn Wahb narrated to us, Haywah said: Ibn al-Had narrated to me, that Abdullah ibn Khabbab narrated to them, from Abu Sa'id al-Khudri, that he heard the Messenger of Allah, peace and blessings of Allah be upon him, and his uncle Abu Talib was mentioned in his presence, so he said: "Perhaps my intercession will benefit him on the Day of Resurrection, so he will be placed in a shallow pool of fire that reaches his ankles, from which his brain will boil."