Surah Al-Anfal (The Spoils of War), Verse 16

وَمَنْ یُّوَلِّهِمْ یَوْمَىِٕذٍ دُبُرَهٗۤ اِلَّا مُتَحَرِّفًا لِّقِتَالٍ اَوْ مُتَحَیِّزًا اِلٰی فِئَةٍ فَقَدْ بَآءَ بِغَضَبٍ مِّنَ اللّٰهِ وَمَاْوٰىهُ جَهَنَّمُ وَبِئْسَ الْمَصِیْرُ ۟

Wa mai yuwallihim yawma'izin duburahooo illaa mutaharrifal liqitaalin aw mutahaiyizan ilaa fi'atin faqad baaa'a bighadabim minal laahi wa ma'waahu Jahannamu wa bi'sal maseer

“If any do turn his back to them on such a day - unless it be in a stratagem of war, or to retreat to a troop (of his own)- he draws on himself the wrath of Allah, and his abode is Hell,- an evil refuge (indeed)!”

Quran 8:16 (Yusuf Ali Translation)