وَ اِذْ تَاَذَّنَ رَبُّكُمْ لَئِنْ شَكَرْتُمْ لَاَزِیْدَنَّكُمْ وَ لَئِنْ كَفَرْتُمْ اِنَّ عَذَابِیْ لَشَدِیْدٌ(۷)(سورۃ ابراہیم)
Translation
And (remember) that time also when your Lord had proclaimed that if you truly give thanks, then I will surely give you more, and if you are ungrateful, then know for sure, My punishment is very severe. (Asan Tarjumat-ul-Quran)