﴿ جَنَّٰتِ عَدْنٍ ٱلَّتِى وَعَدَ ٱلرَّحْمَٰنُ عِبَادَهُۥ بِٱلْغَيْبِ ۚ إِنَّهُۥ كَانَ وَعْدُهُۥ مَأْتِيًّۭا ﴾

“[theirs will be the] gardens of perpetual bliss which the Most Gracious has promised unto His servants, in a realm which is beyond the reach of human perception: [and,] verily, His promise is ever sure of fulfilment!”

Please check ayah 19:63 for complete tafsir.