وَإِذۡ تَأَذَّنَ رَبُّكُمۡ لَئِن شَكَرۡتُمۡ لَأَزِيدَنَّكُمۡۖ وَلَئِن كَفَرۡتُمۡ إِنَّ عَذَابِي لَشَدِيدٞ
And as your Lord has notified (you), "Indeed in case you thank (Him), indeed I will definitely increase you and indeed in case you disbelieve, surely My torment is indeed strict
Author: Muhammad Mahmoud Ghali