Surah Ali'Imran, Verse 28

لَّا يَتَّخِذِ ٱلۡمُؤۡمِنُونَ ٱلۡكَٰفِرِينَ أَوۡلِيَآءَ مِن دُونِ ٱلۡمُؤۡمِنِينَۖ وَمَن يَفۡعَلۡ ذَٰلِكَ فَلَيۡسَ مِنَ ٱللَّهِ فِي شَيۡءٍ إِلَّآ أَن تَتَّقُواْ مِنۡهُمۡ تُقَىٰةٗۗ وَيُحَذِّرُكُمُ ٱللَّهُ نَفۡسَهُۥۗ وَإِلَى ٱللَّهِ ٱلۡمَصِيرُ٢٨

lā yattakhidhi l-mu'minūna l-kāfirīna awliyāa min dūni l-mu'minīna waman yafʿal dhālika falaysa mina l-lahi fī shayin illā an tattaqū min'hum tuqātan wayuḥadhirukumu l-lahu nafsahu wa-ilā l-lahi l-maṣīru

Let not believers take disbelievers as allies [i.e., supporters or protectors] rather than believers. And whoever [of you] does that has nothing [i.e., no association] with Allāh, except when taking precaution against them in prudence. And Allāh warns you of Himself, and to Allāh is the [final] destination.