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. (Using translation from Muslim 2824b)
أَنَّ النَّبِيَّ ﷺ قَالَ قَالَ اللهُ ﷻ أَعْدَدْتُ لِعِبَادِي الصَّالِحِينَ مَا لَا عَيْنٌ رَأَتْ وَلَا أُذُنٌ سَمِعَتْ وَلَا خَطَرَ عَلَى قَلْبِ بَشَرٍ ذُخْرًا مِنْ بَلْهَ مَا أَطْلَعَكُمْ عَلَيْهِ