Surah Al-Waqi'ah, ayah 70

56:70

لَوۡ نَشَآءُ جَعَلۡنَٰهُ أُجَاجٗا فَلَوۡلَا تَشۡكُرُونَ ٧٠

Law nashā'u ja'alnāhu ujājan falawlā tashkurūn

If We willed, We could make it bitter, so why are you not grateful?