Surah Al-Anfal 8:73
وَٱلَّذِينَ كَفَرُوا۟ بَعْضُهُمْ أَوْلِيَآءُ بَعْضٍ ۚ إِلَّا تَفْعَلُوهُ تَكُن فِتْنَةٌ فِى ٱلْأَرْضِ وَفَسَادٌ كَبِيرٌ ٧٣
EnglishSahih International
And those who disbelieved are allies of one another. If you do not do so, there will be fitnah on earth and great corruption.