From Sahih Muslim (Hadith 7133):
Abu Huraira reported that Allah's Apostle (ﷺ) said:Allah, the Exalted and Glorious, said: I have prepared for My pious servants which no eye (has ever) seen, no ear has (ever) heard and no human heart has ever perceived those bounties leaving apart (those bounties) about which Allah has informed you
Reference: Muslim 7133