وَخَلَّيْتَ سَهْماً فِي الكِنَانَةِ وَاحِداً

سَيَرْمِي بِهِ أوْ يَكْسِرُ السَّهْمَ كَاسِرُهُ

You left a single arrow in the quiver

Either it will be shot by the archer, or the arrow itself will be broken