In the name of Allah, Most Gracious, Most Merciful.
Narrated Abu-Huraira (May Allah be satisfied with him): ‘Allah’s Messenger (May Allah exalt his mention and protect him from imperfection) said: “Allah (the Exalted) said”: I have prepared for my pious servants such things as no eye had ever seen, no ear has ever heard of, and nobody has ever imagined of, all that is reserved.” Abu-Huraira added: ‘If you wish to confirm this, you can read Allah’s statement:
No person knows what is kept hidden for them of joy as a reward for what they used to do. (Quran 32.17)
Riyaadiss-Saliheen (The Meadows of the Righteous) (Abridged)
By Imam An Nawawi Vol. (2)
Publisher: Dar Al-Manarah
Chapter 344, Page 1238, Number 1098