The Cave (18:109) 
 

قُل لَّوْ كَانَ ٱلْبَحْرُ مِدَادًۭا لِّكَلِمَـٰتِ رَبِّى لَنَفِدَ ٱلْبَحْرُ قَبْلَ أَن تَنفَدَ كَلِمَـٰتُ رَبِّى وَلَوْ جِئْنَا بِمِثْلِهِۦ مَدَدًۭا   ١٠٩

Say, ˹O Prophet,˺ “If the ocean were ink for ˹writing˺ the Words of my Lord, it would certainly run out before the Words of my Lord were finished, even if We refilled it with its equal.”