Quran

وَمَن يُوَلِّهِمۡ يَوۡمَئِذٖ دُبُرَهُۥٓ إِلَّا مُتَحَرِّفٗا لِّقِتَالٍ أَوۡ مُتَحَيِّزًا إِلَىٰ فِئَةٖ فَقَدۡ بَآءَ بِغَضَبٖ مِّنَ ٱللَّهِ وَمَأۡوَىٰهُ جَهَنَّمُۖ وَبِئۡسَ ٱلۡمَصِيرُ

And whoever turns his back to them on such a day, unless swerving [as a strategy] for war or joining [another] company, has certainly returned with anger [upon him] from Allah, and his refuge is Hell - and wretched is the destination