Al-Hashr 59:12

لَئِنۡ أُخۡرِجُواْ لَا يَخۡرُجُونَ مَعَهُمۡ وَلَئِن قُوتِلُواْ لَا يَنصُرُونَهُمۡ وَلَئِن نَّصَرُوهُمۡ لَيُوَلُّنَّ ٱلۡأَدۡبَٰرَ ثُمَّ لَا يُنصَرُونَ 12

If they are expelled, they will not leave with them, and if they are fought, they will not aid them. And [even] if they should aid them, they will surely turn their backs; then [thereafter] they will not be aided