النساۤء — An-Nisa' Ayat 144
يٰٓاَيُّهَا الَّذِيْنَ اٰمَنُوْا لَا تَتَّخِذُوا الْكٰفِرِيْنَ اَوْلِيَاۤءَ مِنْ دُوْنِ الْمُؤْمِنِيْنَ ۚ اَتُرِيْدُوْنَ اَنْ تَجْعَلُوْا لِلّٰهِ عَلَيْكُمْ سُلْطٰنًا مُّبِيْنًا
Yā ayyuhal-lażīna āmanū lā tattakhiżul-kāfirīna auliyā'a min dūnil-mu'minīn(a), aturīdūna an taj‘alū lillāhi ‘alaikum sulṭānam mubīnā(n).
"O you who have believed, do not take the disbelievers as allies instead of the believers. Do you wish to give Allah against yourselves a clear case?"