Qur'an 3:100

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن تُطِيعُوا۟ فَرِيقًا مِّنَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَـٰبَ يَرُدُّوكُم بَعْدَ إِيمَـٰنِكُمْ كَـٰفِرِينَ

“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.”

Aal-i-Imraan 3:100 · Saheeh International