حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى بْنِ أَبِي عُمَرَ الْمَكِّيُّ، وَبِشْرُ بْنُ الْحَكَمِ، قَالاَ حَدَّثَنَا عَبْدُ الْعَزِيزِ، - وَهُوَ ابْنُ مُحَمَّدٍ - الدَّرَاوَرْدِيُّ عَنْ يَزِيدَ بْنِ الْهَادِ، عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ، عَنْ عَامِرِ بْنِ سَعْدٍ، عَنِ الْعَبَّاسِ بْنِ عَبْدِ الْمُطَّلِبِ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ ذَاقَ طَعْمَ الإِيمَانِ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ رَسُولاً ‏"‏ ‏‏

It is narrated on the authority of 'Abbas b. 'Abdul-Muttalib that he heard the Messenger of Allah saying: He has found the taste of faith (iman) who is content with Allah as his Lord, with Islam as his religion (code of life) and with Muhammad (PBUH) as his Prophet. Translation Not Available

Book Ref: Sahih Muslim Book 1 Hadith 54
Web Ref:  Sahih Muslim Book 1 Hadith 34