Sura 8 Al-Anfal (The Spoils of War), aya 45

1. يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا لَقِيتُمْ فِئَةً فَاثْبُتُوا وَاذْكُرُوا اللَّهَ كَثِيرًا لَعَلَّكُمْ تُفْلِحُونَ

   O you who have believed, when you encounter a company (from the enemy forces), stand firm and remember Allah much that you may be successful.

   8:45

Tafsiri: Saheeh International