question #1 Sahih Muslim 43a, Book 1, Hadith 72 : What are the qualities that lead a person to experience the sweetness of faith?

There are three qualities for which anyone who is characterised by them will relish the sweetness of faith: he to whom Allah and His Messenger are dearer than all else; he who loves a man for Allah’s sake alone; and he who has as great an abhorrence of returning to unbelief after Allah has rescued him from it as he has of being cast into Hell.