مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1763
Musnad Bani Hashim (Hadeeth of al-'Abbas bin 'Abdul-Muttalib from the Prophet)
It was narrated from "Abdullah bin al-Harith, from al-"Abbas bin ‘Abdul-Muttalib, that he said: O Messenger of Allah, your uncle Abu Talib used to protect you and he did such and such. He said: “He is in the shallowest part of Hell; were it not for me, he would be in the lowest depths.
Musnad Ahmad 1763Sahih (Darussalam) [ al-Bukhari (3883) and Muslim (209)]