5:73

لَّقَدْ كَفَرَ الَّذِينَ قَالُوا إِنَّ اللَّهَ ثَالِثُ ثَلَاثَةٍ وَمَا مِنْ إِلَٰهٍ إِلَّا إِلَٰهٌ وَاحِدٌ وَإِن لَّمْ يَنتَهُوا عَمَّا يَقُولُونَ لَيَمَسَّنَّ الَّذِينَ كَفَرُوا مِنْهُمْ عَذَابٌ أَلِيمٌ

Transliteration:

Laqad kafara allatheena qaloo inna Allaha thalithu thalathatin wama min ilahin illa ilahun wahidun wa-in lam yantahoo AAamma yaqooloona layamassanna allatheena kafaroo minhum AAathabun aleemun

Word by Word:

Certainly disbelieved those who say, "Indeed Allah (is the) third (of) three." And (there is) no [of] god except (the) One God. And if not they desist from what they are saying surely will afflict those who disbelieved among them, a punishment painful.

Translations:

Indeed, the truth deny they who say, "Behold, God is the third of a trinity" - seeing that there is no deity whatever save the One God. And unless they desist from this their assertion, grievous suffering is bound to befall such of them as are bent on denying the truth.

They do blaspheme who say: God is one of three in a Trinity: for there is no god except One God. If they desist not from their word (of blasphemy), verily a grievous penalty will befall the blasphemers among them.

They surely disbelieve who say: Lo! Allah is the third of three; when there is no Allah save the One Allah. If they desist not from so saying a painful doom will fall on those of them who disbelieve.

Certainly they disbelieve who say: Allah is the third of the three. And there is no God but One God. And if they desist not from what they say a painful chastisement will surely befall such of them as disbelieve.

They have certainly disbelieved who say, " Allah 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.