الْاَنْفَالِ · 73

وَٱلَّذِينَ كَفَرُواْ بَعۡضُهُمۡ أَوۡلِيَآءُ بَعۡضٍۚ إِلَّا تَفۡعَلُوهُ تَكُن فِتۡنَةࣱ فِي ٱلۡأَرۡضِ وَفَسَادࣱ كَبِيرࣱ‏

The Unbelievers are protectors, one of another: Unless ye do this, (protect each other), there would be tumult and oppression on earth, and great mischief