Reported by Abu Hurairah (RA): The Messenger of Allah (peace be upon him) said, "Allah, the Exalted, has said: `I have prepared for my righteous slaves what no eye has seen, no ear has heard, and the mind of no man has conceived.' If you wish, recite: `No person knows what is kept hidden for them of joy as a reward for what they used to do.''' (32:17) [Bukhari & Muslim]