Al 'Imran, 100 Ayah
3:100
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ إِن تُطِيعُواْ فَرِيقٗا مِّنَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ يَرُدُّوكُم بَعۡدَ إِيمَٰنِكُمۡ كَٰفِرِينَ ١٠٠
Yā 'Ayyuhā Al-Ladhīna 'Āmanū 'In Tuţī`ū Farīqāan Mina Al-Ladhīna 'Ūtū Al-Kitāba Yaruddūkum Ba`da 'Īmānikum Kāfirīna
O you who have believed, if you obey a party of those who were given the Scripture, they would turn you back, after your belief, [to being] unbelievers.