Sweetness (delight) of faith.
Narrated Anas رضى الله عنه:
The Prophet ﷺ said, “Whoever possesses the following three (qualities) will have the sweetness (delight) of faith:
The one to whom Allah عز و جل and His Messenger (Muhammad ﷺ) become dearer than anything else.
Who loves a person and he loves him only for Allah’s sake.
Who hated to revert to atheism (disbelief) as he hates to be thrown into the fires.