Surah An-Nisa, Verse 144

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ لَا تَتَّخِذُواْ ٱلۡكَٰفِرِينَ أَوۡلِيَآءَ مِن دُونِ ٱلۡمُؤۡمِنِينَۚ أَتُرِيدُونَ أَن تَجۡعَلُواْ لِلَّهِ عَلَيۡكُمۡ سُلۡطَٰنٗا مُّبِينًا١٤٤

yāayyuhā alladhīna āmanū lā tattakhidhū l-kāfirīna awliyāa min dūni l-mu'minīna aturīdūna an tajʿalū lillahi ʿalaykum sul'ṭānan mubīnan

O you who have believed, do not take the disbelievers as allies instead of the believers. Do you wish to give Allāh against yourselves a clear case?