لَـقَدۡ كَفَرَ الَّذِيۡنَ قَالُوۡۤا اِنَّ اللّٰهَ ثَالِثُ ثَلٰثَةٍۘ وَمَا مِنۡ اِلٰهٍ اِلَّاۤ اِلٰـهٌ وَّاحِدٌ ؕ وَاِنۡ لَّمۡ يَنۡتَهُوۡا عَمَّا يَقُوۡلُوۡنَ لَيَمَسَّنَّ الَّذِيۡنَ كَفَرُوۡا مِنۡهُمۡ عَذَابٌ اَلِيۡمٌ
Certainly they (also) become disbelievers who say: ‘Allah is the third of the three (Gods),’ whereas there is none worthy of worship except the One God. If they do not desist from (the absurdity) which they utter, a grievous punishment will surely torment those of them who disbelieve.