٨ : ٧٣
وَٱلَّذِينَ كَفَرُواْ بَعۡضُهُمۡ أَوۡلِيَآءُ بَعۡضٍۚ إِلَّا تَفۡعَلُوهُ تَكُن فِتۡنَةٞ فِي ٱلۡأَرۡضِ وَفَسَادٞ كَبِيرٞ
Those who disbelieve are protectors of one another. Unless you do likewise, there will be persecution in the land and great corruption.
شرح ومعانٍ · ١
- i.e., taking one another as allies and abandoning all bonds with the disbelievers.