43.الزُّخْرُف

اَمۡ اٰتَيۡنٰهُمۡ كِتٰبًا مِّنۡ قَبۡلِهٖ فَهُمۡ بِهٖ مُسۡتَمۡسِكُوۡنَ‏

Have We given them before this any Book which they stick to as an authority?