Verse 7

وَإِذْ تَأَذَّنَ رَبُّكُمْ لَئِن شَكَرْتُمْ لَأَزِيدَنَّكُمْ وَلَئِن كَفَرْتُمْ إِنَّ عَذَابِى لَشَدِيدٌ

And your Lord has announced; if you are grateful, then I will increase your lot, however, if you are ungrateful, then My punishment is severe.