Quran 6:29 from Surah Al-An'aam on Divine Marvels.
وَقَالُوٓاْ إِنۡ هِيَ إِلَّا حَيَاتُنَا ٱلدُّنۡيَا وَمَا نَحۡنُ بِمَبۡعُوثِينَ
English translation: And they said Not it (is) except our life (of) the world and not we (will be) resurrected
Transliteration: waqalu in hiya illa hayatuna al-dun'ya wama nahnu bimab'uthina