Sahih Muslim Book 1, Hadith Number 413.

Chapter : Intercession of the Messenger of Allah (may peace be upon him) for Abu Talib and some remission for him on this account.

Ibn ‘Abbas reported: The Prophet (may peace be upon him) said: Among the inhabitants of the Fire Abu Talib would have the least suffering, and he would be wearing two shoes (of Fire) which would boil his brain.