2:256
لَآ إِكْرَاهَ فِى ٱل دِّينِ قَد تَّبَيَّنَ ٱل رُّشْدُ مِنَ ٱلْ غَىِّ فَ مَن يَكْفُرْ بِ ٱل طَّٰغُوتِ وَ يُؤْمِنۢ بِ ٱللَّهِ فَ قَدِ ٱسْتَمْسَكَ بِ ٱلْ عُرْوَةِ ٱلْ وُثْقَىٰ لَا ٱنفِصَامَ لَ هَا وَ ٱللَّهُ سَمِيعٌ عَلِيمٌ
There shall be no compulsion in [acceptance of] the religion. The right course has become clear from the wrong. So whoever disbelieves in Taghut and believes in Allah has grasped the most trustworthy handhold with no break in it. And Allah is Hearing and Knowing.