﴿ لَئِنْ أُخْرِجُوا۟ لَا يَخْرُجُونَ مَعَهُمْ وَلَئِن قُوتِلُوا۟ لَا يَنصُرُونَهُمْ وَلَئِن نَّصَرُوهُمْ لَيُوَلُّنَّ ٱلْأَدْبَٰرَ ثُمَّ لَا يُنصَرُونَ ﴾

“[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.”

For indeed if they are expelled they would not go forth with them and if they are fought against they would not help them. And even if they were to help them that is to say even if they came to help them they would surely turn their backs to flee the implied response to the oath suffices in place of the response to the conditional in all five instances — then they the Jews would not be helped.