Surah Al-Kahf, Verse 109
قُل لَّوْ كَانَ ٱلْبَحْرُ مِدَادًۭا لِّكَلِمَٰتِ رَبِّى لَنَفِدَ ٱلْبَحْرُ قَبْلَ أَن تَنفَدَ كَلِمَٰتُ رَبِّى وَلَوْ جِئْنَا بِمِثْلِهِۦ مَدَدًۭا
Translation — Sahih International
Say, "If the sea were ink for [writing] the words of my Lord, the sea would be exhausted before the words of my Lord were exhausted, even if We brought the like of it as a supplement."
Source
Kur'an-ı Kerim, Kehf Suresi 18:109
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/18-suresi-109-ayet