Al 'Imran, 177 Ayah
3:177
إِنَّ ٱلَّذِينَ ٱشۡتَرَوُاْ ٱلۡكُفۡرَ بِٱلۡإِيمَٰنِ لَن يَضُرُّواْ ٱللَّهَ شَيۡـٔٗاۖ وَلَهُمۡ عَذَابٌ أَلِيمٞ ١٧٧
'Inna Al-Ladhīna Ashtaraw Al-Kufra Bil-'Īmāni Lan Yađurrū Al-Laha Shay'āan Wa Lahum `Adhābun 'Alīmun
Indeed, those who purchase disbelief [in exchange] for faith - never will they harm Allah at all, and for them is a painful punishment.