He heard the Messenger of Allah ﷺ say, "Whoever is content with Allah as Lord, Islam as religion, and Muhammad as Messenger has tasted the sweetness of faith."
أنه سمع رسول الله ﷺ يقول: ذاق طعم الإيمان من رضى بالله ربا وبالإسلام دينا وبمحمد رسولا.
Muslim reported it in the Book of Faith (34) through several routes from Abdul-Aziz bin Muhammad Darawardi, from Yazid bin Had, from Muhammad bin Ibrahim, from Amir bin Saad, from Abbas bin Abdul-Muttalib, who narrated it.