At Tawbah Ayah 47

لَوْ خَرَجُواْ فِيكُم مَّا زَادُوكُمْ إِلَّا خَبَالاً وَلَأَوْضَعُواْ خِلَـٰلَكُمْ يَبْغُونَكُمُ ٱلْفِتْنَةَ وَفِيكُمْ سَمَّـٰعُونَ لَهُمْ‌ۗ وَٱللَّهُ عَلِيمُۢ بِٱلظَّـٰلِمِينَ ٤٧ Had they gone forth with you ?believers?, they would have been nothing but trouble for you, and would have scrambled around, seeking to spread discord in your midst. And some of you would have eagerly listened to them. And Allah has ?perfect? knowledge of the wrongdoers.