يٰۤـاَهۡلَ الۡكِتٰبِ لَا تَغۡلُوۡا فِىۡ دِيۡـنِكُمۡ وَلَا تَقُوۡلُوۡا عَلَى اللّٰهِ اِلَّا الۡحَـقَّ ؕ اِنَّمَا الۡمَسِيۡحُ عِيۡسَى ابۡنُ مَرۡيَمَ رَسُوۡلُ اللّٰهِ وَكَلِمَتُهٗ ۚ اَ لۡقٰٮهَاۤ اِلٰى مَرۡيَمَ وَرُوۡحٌ مِّنۡهُ فَاٰمِنُوۡا بِاللّٰهِ وَرُسُلِهٖ ۚ وَلَا تَقُوۡلُوۡا ثَلٰثَةٌ ؕ اِنْتَهُوۡا خَيۡرًا لَّـكُمۡ ؕ اِنَّمَا اللّٰهُ اِلٰـهٌ وَّاحِدٌ ؕ سُبۡحٰنَهٗۤ اَنۡ يَّكُوۡنَ لَهٗ وَلَدٌ ۘ لَهٗ مَا فِى السَّمٰوٰتِ وَمَا فِى الۡاَرۡضِؕ وَكَفٰى بِاللّٰهِ وَكِيۡلًا(النساء :171)
Ya ahla alkitabi la taghloo fee deenikum wala taqooloo 'ala Allahi illa alhaqqa innama almaseehu 'eesa ibnu maryama rasoolu Allahi wakalimatuhu alqaha ila maryama waroohun minhu faaminoo biAllahi warusulihi wala taqooloo thalathatun intahoo khayran lakum innama Allahu ilahun wahidun subhanahu an yakoona lahu waladun lahu ma fee alssamawati wama fee alardi wakafa biAllahi wakeelan
Sahih International:
O People of the Scripture, do not commit excess in your religion or say about Allah except the truth. The Messiah, Jesus, the son of Mary, was but a messenger of Allah and His word which He directed to Mary and a soul [created at a command] from Him. So believe in Allah and His messengers. And do not say, "Three"; desist - it is better for you. Indeed, Allah is but one God. Exalted is He above having a son. To Him belongs whatever is in the heavens and whatever is on the earth. And sufficient is Allah as Disposer of affairs.
لَـقَدۡ كَفَرَ الَّذِيۡنَ قَالُوۡۤا اِنَّ اللّٰهَ ثَالِثُ ثَلٰثَةٍ ۘ وَمَا مِنۡ اِلٰهٍ اِلَّاۤ اِلٰـهٌ وَّاحِدٌ ؕ وَاِنۡ لَّمۡ يَنۡتَهُوۡا عَمَّا يَقُوۡلُوۡنَ لَيَمَسَّنَّ الَّذِيۡنَ كَفَرُوۡا مِنۡهُمۡ عَذَابٌ اَ لِيۡمٌ(المائدة :73)
Laqad kafara allatheena qaloo inna Allaha thalithu thalathatin wama min ilahin illa ilahun wahidun wain lam yantahoo 'amma yaqooloona layamassanna allatheena kafaroo minhum 'athabun aleemun
Sahih International:
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.
Complete Indexing of Quran Topics
We have indexed and found 2 verses about or related to (including the word(s)) "Trinity".
For your information, the verses as described above: