Surah Al-Anfal 8:16

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 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 Allāh, and his refuge is Hell - and wretched is the destination.

Translation: Saheeh International

Tafsir

Whoever turns his back to them on that day the day of the encounter with them unless manœuvring turning around for battle — by pretending to be in flight as a trick while actually intending to relaunch an attack — or joining another detachment a company of Muslims calling on it for assistance he has truly incurred the …

Excerpt from Tafsir al-Jalalayn, commentary on 8:16, via Quran.com. The reader has the full commentary and 9 more tafsirs.