Surah At-Taubah (The Repentance), Verse 23

یٰۤاَیُّهَا الَّذِیْنَ اٰمَنُوْا لَا تَتَّخِذُوْۤا اٰبَآءَكُمْ وَاِخْوَانَكُمْ اَوْلِیَآءَ اِنِ اسْتَحَبُّوا الْكُفْرَ عَلَی الْاِیْمَانِ وَمَنْ یَّتَوَلَّهُمْ مِّنْكُمْ فَاُولٰٓىِٕكَ هُمُ الظّٰلِمُوْنَ ۟

Yaaa aiyuhal lazeena aamanoo laa tattakhizooo aabaaa 'akum wa ikhwaanakum awliyaaa'a inis tahabbul kufra 'alal eemaan; wa mai yatawal lahum minkum fa ulaaa'ika humuz zaalimoon

“O ye who believe! take not for protectors your fathers and your brothers if they love infidelity above Faith: if any of you do so, they do wrong.”

Quran 9:23 (Yusuf Ali Translation)