وَإِذۡ تَأَذَّنَ رَبُّكُمۡ لَئِن شَكَرۡتُمۡ لَأَزِيدَنَّكُمۡۖ وَلَئِن كَفَرۡتُمۡ إِنَّ عَذَابِي لَشَدِيدٞ

Wa iz ta azzana Rabbukum la'in shakartum la azeedannakum wa la'in kafartum inna 'azaabee lashadeed

And remember! your Lord caused to be declared (publicly): "If ye are grateful, I will add more (favours) unto you; But if ye show ingratitude, truly My punishment is terrible indeed."

— Ibrahim (إِبْرَاهِيم), 14:7