Quran 18:109 from Surah Al-Kahf on Divine Marvels.
قُل لَّوۡ كَانَ ٱلۡبَحۡرُ مِدَادٗا لِّكَلِمَٰتِ رَبِّي لَنَفِدَ ٱلۡبَحۡرُ قَبۡلَ أَن تَنفَدَ كَلِمَٰتُ رَبِّي وَلَوۡ جِئۡنَا بِمِثۡلِهِۦ مَدَدٗا
English translation: Say If were the sea ink for (the) Words (of) my Lord surely (would be) exhausted the sea before [that] (were) exhausted (the) Words (of) my Lord even if We brought (the) like (of) it (as) a supplement
Transliteration: qul law kana al-bahru midadan likalimati rabbi lanafida al-bahru qabla an tanfada kalimatu rabbi walaw ji'na bimith'lihi madadan