Read and reflect on verse 5138 from Surah Al-Hashr: [for] if those [to whom they have pledged themselves] are indeed driven away, they will not go forth with them; and if war is waged against them, they...
لَئِنْ أُخْرِجُوا لَا يَخْرُجُونَ مَعَهُمْ وَلَئِنْ قُوتِلُوا لَا يَنْصُرُونَهُمْ وَلَئِنْ نَصَرُوهُمْ لَيُوَلُّنَّ الْأَدْبَارَ ثُمَّ لَا يُنْصَرُونَ
[for] if those [to whom they have pledged themselves] are indeed driven away, they will not go forth with them; and if war is waged against them, they will not come to their succour; and even if they [try to] succour them, they will most certainly turn their backs [in flight], and in the end will [themselves] find no succour.