5:73
لَّقَدْكَفَرَٱلَّذِينَقَالُوٓا۟إِنَّٱللَّهَثَالِثُثَلَٰثَةٍ ۘوَمَامِنْإِلَٰهٍإِلَّآإِلَٰهٌوَٰحِدٌ ۚوَإِنلَّمْيَنتَهُوا۟عَمَّايَقُولُونَلَيَمَسَّنَّٱلَّذِينَكَفَرُوا۟مِنْهُمْعَذَابٌأَلِيمٌ٧٣
laqad kafara alladhīna qālū inna l-laha thālithu thalāthatin wamā min ilāhin illā ilāhun wāḥidun wa-in lam yantahū ʿammā yaqūlūna layamassanna alladhīna kafarū min'hum ʿadhābun alīmun
They have certainly disbelieved who say, "Allāh is the third of three." And there is no god except one God. And if they do not desist from what they are saying, there will surely afflict the disbelievers among them a painful punishment.(73)