8. Al-Anfal (Spoils Of War, Booty)

Surah: 8   Aya: 57

57. Fa-imma tathqafannahum fee alharbi fasharrid bihim man khalfahum laAAallahum yaththakkaroona
  

  Translation

57. So if you gain the mastery over them in war, punish them severely in order to disperse those who are behind them, so that they may learn a lesson.