Quran 45:24 from Surah Al-Jaathiya on Divine Marvels.
وَقَالُواْ مَا هِيَ إِلَّا حَيَاتُنَا ٱلدُّنۡيَا نَمُوتُ وَنَحۡيَا وَمَا يُهۡلِكُنَآ إِلَّا ٱلدَّهۡرُۚ وَمَا لَهُم بِذَٰلِكَ مِنۡ عِلۡمٍۖ إِنۡ هُمۡ إِلَّا يَظُنُّونَ
English translation: And they say Not it (is) but our life (of) the world we die and we live and not destroys us except the time And not for them of that any knowledge not they (do) but guess
Transliteration: waqalu ma hiya illa hayatuna al-dun'ya namutu wanahya wama yuh'likuna illa al-dahru wama lahum bidhalika min il'min in hum illa yazunnuna