Quran 100:6 from Surah Al-Aadiyaat on Divine Marvels.
إِنَّ ٱلۡإِنسَٰنَ لِرَبِّهِۦ لَكَنُودٞ
English translation: Indeed mankind to his Lord (is) surely ungrateful
Transliteration: inna al-insana lirabbihi lakanudun