وَإِذۡ تَأَذَّنَ رَبُّكُمۡ لَئِن شَكَرۡتُمۡ لَأَزِيدَنَّكُمۡۖ وَلَئِن كَفَرۡتُمۡ إِنَّ عَذَابِي لَشَدِيدٞ ٧
Wa idh ta'addhana rabbukum la in shakartum la azīdannakum wala'in kafartum inna 'adhābī lashadīd
And [remember] when your Lord proclaimed, 'If you are grateful, I will surely increase you [in favor]; but if you deny, indeed, My punishment is severe.'"