Surah Ibrahim, Verse 7

وَإِذۡ تَأَذَّنَ رَبُّكُمۡ لَئِن شَكَرۡتُمۡ لَأَزِيدَنَّكُمۡۖ وَلَئِن كَفَرۡتُمۡ إِنَّ عَذَابِي لَشَدِيدٞ٧

wa-idh ta-adhana rabbukum la-in shakartum la-azīdannakum wala-in kafartum inna ʿadhābī lashadīdun

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.'"