Surah Al-Anfal, Verse 15

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ إِذَا لَقِيتُمُ ٱلَّذِينَ كَفَرُواْ زَحۡفٗا فَلَا تُوَلُّوهُمُ ٱلۡأَدۡبَارَ١٥

yāayyuhā alladhīna āmanū idhā laqītumu alladhīna kafarū zaḥfan falā tuwallūhumu l-adbāra

O you who have believed, when you meet those who disbelieve advancing [in battle], do not turn to them your backs [in flight].