(4) باب حَلاَوَةِ الإِسْلاَمِ
It was narrated from Anas that :
The Prophet [SAW] said: "There are three things, whoever attains them will find therein the sweetness of Islam: When Allah [SWT] and His Messenger [SAW] are dearer to him than all else; when he loves a person and only loves him for the sake of Allah [SWT]; and when he would hate to go back to disbelief as much as he would hate to be thrown into the fire."
Reference: Sunan an-Nasa'i 4989
In-book reference: Book 47, Hadith 5
English translation: Vol. 6, Book 47, Hadith 4992