Sura al-Baqara 2:120

وَلَن تَرْضَىٰ عَنكَ ٱلْيَهُودُ وَلَا ٱلنَّصَٰرَىٰ حَتَّىٰ تَتَّبِعَ مِلَّتَهُمْ قُلْ إِنَّ هُدَى ٱللَّـهِ هُوَ ٱلْهُدَىٰ وَلَئِنِ ٱتَّبَعْتَ أَهْوَآءَهُم بَعْدَ ٱلَّذِى جَآءَكَ مِنَ ٱلْعِلْمِ مَا لَكَ مِنَ ٱللَّـهِ مِن وَلِىٍّ وَلَا نَصِيرٍ

wa-lan tarḍā ʿanka l-yahūdu wa-lā l-naṣārā ḥattā tattabiʿa millatahum qul inna huda allāhi huwa l-hudā wa-laʾini ittabaʿta ahwāʾahum baʿda alladhī jāʾaka mina l-ʿilmi mā la-ka mina allāhi min waliyyin wa-lā naṣīrin

Never will the Jews or the Christians be satisfied with thee unless thou follow their form of religion. Say: "The Guidance of Allah,-that is the (only) Guidance." Wert thou to follow their desires after the knowledge which hath reached thee, then wouldst thou find neither Protector nor helper against Allah.