Quran 37, As-Saffat (Those Ranged in Ranks)

37:35For when it was said unto them, There is no Allah save Allah, they were scornful

إِنَّهُمْ كَانُوا إِذَا قِيلَ لَهُمْ لَا إِلَهَ إِلَّا اللَّهُ يَسْتَكْبِرُونَ