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 ﷺ as his Prophet.  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ ذَاقَ طَعْمَ الإِيمَانِ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ رَسُولاً  

that he heard the Messenger of Allah ﷺ say: "Whoever is pleased with Allah as (his) Lord, and Islam as (his) religion, and Muhammad as (his) Prophet, then he has tasted the sweetness of faith."  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ ذَاقَ طَعْمَ الإِيمَانِ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ نَبِيًّا  

that he heard the Messenger of Allah ﷺ say: "Whoever is pleased with Allah as (his) Lord, and Islam as (his) religion, and Muhammad as (his) Prophet, then he has tasted the sweetness of faith." (Using translation from Tirmidhī 2623)  

أَنَّهُ سَمِعَ رَسُولَ اللهِ ﷺ يَقُولُ ذَاقَ طَعْمَ الْإِيمَانِ مَنْ رَضِيَ بِاللهِ رَبًّا وَبِالْإِسْلامِ دِينًا وَبِمُحَمَّدٍ رَسُولًا  

that he heard the Messenger of Allah ﷺ say: "Whoever is pleased with Allah as (his) Lord, and Islam as (his) religion, and Muhammad as (his) Prophet, then he has tasted the sweetness of faith." (Using translation from Tirmidhī 2623)  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ «ذَاقَ طَعْمَ الْإِيمَانِ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالْإِسْلَامِ دِينًا وَبِمُحَمَّدٍ ﷺ نَبِيًّا»  

" ذاق طَعْمَ الإِيمانَ مَنْ رَضِىَ باللَّهِ رَبًّا، وَبِالإِسلام دِينًا، وبمحمَّدٍ رَسُولَا" -وفى لفظ- "نبيَّا".  

("حَسْبُ امْرئٍ مِنَ الإِيمَان أَن يَقُولَ: رَضِيتُ باللَّه رَبًا، وَبِالإِسْلَامِ دِينًا، وَبِمُحَمَّد رَسُولًا".  

"بحَسبِ امْرِئٍ مِنَ الإِيمَانِ أَن يَقُولَ: رَضيتُ بالله رَبًّا, وَبِمُحَمَّدٍ رَسُولًا، وَبِالإِسلامِ دِينًا".