2. Al-Baqara (The Cow)

Surah: 2   Aya: 209

209. Fa-in zalaltum min baAAdi ma jaatkumu albayyinatu faiAAlamoo anna Allaha AAazeezun hakeemun
  

  Translation

209. Then if you slide back after the clear signs (Prophet Muhammad SAW and this Qur'ân, and Islâm) have come to you, then know that Allâh is All-Mighty, All-Wise.