Verse 16

وَمَن يُوَلِّهِمْ يَوْمَئِذٍ دُبُرَهُۥٓ إِلَّا مُتَحَرِّفًا لِّقِتَالٍ أَوْ مُتَحَيِّزًا إِلَىٰ فِئَةٍ فَقَدْ بَآءَ بِغَضَبٍ مِّنَ ٱللَّهِ وَمَأْوَىٰهُ جَهَنَّمُ وَبِئْسَ ٱلْمَصِيرُ

And whoever turns his back on that day, except to get ready for combat or join his group, has incurred a wrath from God and his abode is Gehenna; and what a miserable abode.