Narrated Anas (Radhi Allahu Anhu) the Prophet (Sallallahu 'Alayhi wa Sallam) said, Whoever possesses the following three qualities will taste the sweetness of faith:
1. The one to whom Allah and His Apostle become dearer than anything else.
2. Who loves a person and he loves him only for Allah s sake.
3. Who hates to revert to disbelief (Atheism) after Allah has brought (saved) him out from it, as he hates to be thrown in fire.
Narrated Abu Said Al-Khudri (Radhi Allahu Anhu) The Prophet (Sallallahu 'Alayhi wa Sallam) said, When the people of Paradise will enter Paradise and the people of Hell will go to Hell, Allah will order those who have had faith equal to the weight of a grain of mustard seed to be taken out from Hell. So they will be taken out but (by then) they will be blackened (charred). Then they will be put in the river of Haya (rain) or Hayat (life) (the narrator is in doubt as to which is the right term), and they will revive like a grain that grows near the bank of a flood channel. Don t you see that it comes out yellow and twisted
- Bukhari, Volume 1, Book 2, Number 20 and 21