An-Nisa 4:171

يَـٰٓأَهۡلَ ٱلۡكِتَٰبِ لَا تَغۡلُواْ فِي دِينِكُمۡ وَلَا تَقُولُواْ عَلَى ٱللَّهِ إِلَّا ٱلۡحَقَّۚ إِنَّمَا ٱلۡمَسِيحُ عِيسَى ٱبۡنُ مَرۡيَمَ رَسُولُ ٱللَّهِ وَكَلِمَتُهُۥٓ أَلۡقَىٰهَآ إِلَىٰ مَرۡيَمَ وَرُوحٞ مِّنۡهُۖ فَـَٔامِنُواْ بِٱللَّهِ وَرُسُلِهِۦۖ وَلَا تَقُولُواْ ثَلَٰثَةٌۚ ٱنتَهُواْ خَيۡرٗا لَّكُمۡۚ إِنَّمَا ٱللَّهُ إِلَٰهٞ وَٰحِدٞۖ سُبۡحَٰنَهُۥٓ أَن يَكُونَ لَهُۥ وَلَدٞۘ لَّهُۥ مَا فِي ٱلسَّمَٰوَٰتِ وَمَا فِي ٱلۡأَرۡضِۗ وَكَفَىٰ بِٱللَّهِ وَكِيلٗا 171

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