Sura al-Māʾidah 5:51

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَتَّخِذُوا۟ ٱلْيَهُودَ وَٱلنَّصَٰرَىٰٓ أَوْلِيَآءَ بَعْضُهُمْ أَوْلِيَآءُ بَعْضٍ وَمَن يَتَوَلَّهُم مِّنكُمْ فَإِنَّهُۥ مِنْهُمْ إِنَّ ٱللَّـهَ لَا يَهْدِى ٱلْقَوْمَ ٱلظَّٰلِمِينَ

yā-ayyuhā lladhīna āmanū lā tattakhidhū l-yahūda wa-l-naṣāra awliyāʾa baʿḍuhum awliyāʾu baʿḍin wa-man yatawallahum minkum fa-innahu minhum inna allāha lā yahdī l-qawma l-ẓālimīna

O ye who believe! take not the Jews and the Christians for your friends and protectors: They are but friends and protectors to each other. And he amongst you that turns to them (for friendship) is of them. Verily Allah guideth not a people unjust.