100:6
إِنَّ ٱلْإِنسَـٰنَ لِرَبِّهِۦ لَكَنُودٌ
inna l-insāna lirabbihi lakanūdun
Indeed mankind, to his Lord, is ungrateful.
— Saheeh International
man is ungrateful to his Lord––
— M. A. S. Abdel Haleem
Verily, man (disbeliever) is ungrateful to his Lord.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali