Surah Al-Ma'idah, Ayah 73
Quran 5:73 · The Table Spread · Madani · Para 6 · Page 120
لَقَدْ كَفَرَ الَّذِیْنَ قَالُوْۤا اِنَّ اللّٰهَ ثَالِثُ ثَلٰثَةٍ ۘ وَمَا مِنْ اِلٰهٍ اِلَّاۤ اِلٰهٌ وَّاحِدٌ ؕ وَاِنْ لَّمْ یَنْتَهُوْا عَمَّا یَقُوْلُوْنَ لَیَمَسَّنَّ الَّذِیْنَ كَفَرُوْا مِنْهُمْ عَذَابٌ اَلِیْمٌ ۟
Transliteration
Laqad kafara allatheena qalooinna Allaha thalithu thalathatin wamamin ilahin illa ilahun wahidun wa-inlam yantahoo AAamma yaqooloona layamassanna allatheenakafaroo minhum AAathabun aleem
Saheeh International
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.
Al-Mukhtasar fi Tafsir
The Christians who say that ‘Allah is part of the Trinity: Father, Son and Holy Spirit’ have committed disbelief. Allah is far above such a statement. Allah is not many, but He is only One God Who has no partner. If they do not stop saying such things, a painful punishment will afflict them.
Tafsir Ibn Kathir (abridged)
Explains 5:72–5:75 together — read it on 5:72