Surah Al-Kahf (The Cave), Verse 109

قُلْ لَّوْ كَانَ الْبَحْرُ مِدَادًا لِّكَلِمٰتِ رَبِّیْ لَنَفِدَ الْبَحْرُ قَبْلَ اَنْ تَنْفَدَ كَلِمٰتُ رَبِّیْ وَلَوْ جِئْنَا بِمِثْلِهٖ مَدَدًا ۟

Qul law kaanal bahru midaadal li kalimaati Rabbee lanafidal bahru qabla an tanfada Kalimaatu Rabbee wa law ji'naa bimislihee madadaa

“Say: "If the ocean were ink (wherewith to write out) the words of my Lord, sooner would the ocean be exhausted than would the words of my Lord, even if we added another ocean like it, for its aid."”

Quran 18:109 (Yusuf Ali Translation)