Surah Al-An'am (The Cattle), Verse 82

اَلَّذِیْنَ اٰمَنُوْا وَلَمْ یَلْبِسُوْۤا اِیْمَانَهُمْ بِظُلْمٍ اُولٰٓىِٕكَ لَهُمُ الْاَمْنُ وَهُمْ مُّهْتَدُوْنَ 

Allazeena aamanoo wa lam yalbisooo eemaanahum bizulmin ulaaa'ika lahumul amnu wa hum muhtadoon

“"It is those who believe and confuse not their beliefs with wrong - that are (truly) in security, for they are on (right) guidance."”

Quran 6:82 (Yusuf Ali Translation)