The Holy Quran 100:6 — Surah Al-'Adiyat
Arabic text
إِنَّ ٱلْإِنسَـٰنَ لِرَبِّهِۦ لَكَنُودٌ
Translation
Undoubtedly man (unlike these brave horses) is extremely ungrateful to his Rabb. (Whereas these horses are prepared to give their lives for their masters because of the care they receive, man refuses to obey Allaah's commands even though Allaah created him and provides everything he needs.)
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