7 Preface وَإِذ تَأَذَّنَ رَبُّكُم لَئِن شَكَرتُم لَأَزيدَنَّكُم ۖ وَلَئِن كَفَرتُم إِنَّ عَذابي لَشَديدٌAli Quli QaraiAnd when your Lord proclaimed, ‘If you are grateful, I will surely enhance you [in blessing], but if you are ungrateful, My punishment is indeed severe.’