8.الْأَنْفَال

يٰۤاَيُّهَا الَّذِيۡنَ اٰمَنُوۡۤا اِذَا لَقِيۡتُمُ الَّذِيۡنَ كَفَرُوۡا زَحۡفًا فَلَا تُوَلُّوۡهُمُ الۡاَدۡبَارَ‌ۚ‏

(O Believers!) When you combat the disbelievers (in the battlefield), never turn your backs on them (even if they are) a large army.