Surah Aali Imran (The Family of Imran), Verse 177

اِنَّ الَّذِیْنَ اشْتَرَوُا الْكُفْرَ بِالْاِیْمَانِ لَنْ یَّضُرُّوا اللّٰهَ شَیْـًٔا وَلَهُمْ عَذَابٌ اَلِیْمٌ ۟

Innal lazeenash tarawul kufra bil eemaani lai yadurrul laaha shai'anw wa lahum 'azaabun aleem

“Those who purchase Unbelief at the price of faith,- not the least harm will they do to Allah, but they will have a grievous punishment.”

Quran 3:177 (Yusuf Ali Translation)