مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1777
Musnad Bani Hashim (Hadeeth of al-'Abbas bin 'Abdul-Muttalib from the Prophet)
It was narrated from "Abbas bin "Abdul-Muttalib that he heard the Messenger of Allah (ﷺ) say: “He has tasted faith who is content with Allah as his Lord, Islam as his religion and Muhammad as his Messenger."
Musnad Ahmad 1778Sahih (Darussalam) [ Muslim (34)]