An-Nisa 4:171

Ya ahla alkitabi lataghloo fee deenikum wala taqooloo AAala Allahiilla alhaqqa innama almaseehu AAeesaibnu maryama rasoolu Allahi wakalimatuhu alqahaila maryama waroohun minhu faaminoo billahiwarusulihi wala taqooloo thalathatun intahookhayran lakum innama Allahu ilahun wahidunsubhanahu an yakoona lahu waladun lahu ma fee assamawatiwama fee al-ardi wakafa billahiwakeela

O People of the Scripture, do not commit excess in your religion or say about Allāh except the truth. The Messiah, Jesus the son of Mary, was but a messenger of Allāh and His word which He directed to Mary and a soul [created at a command] from Him. So believe in Allāh and His messengers. And do not say, "Three"; desist - it is better for you. Indeed, Allāh 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 Allāh as Disposer of affairs.

O people of the Book, be not excessive in your Faith, and do not say about Allah anything but the truth.The MasīH ‘Īsā, the son of Maryam, is only a Messenger of Allah, and His Word that He had delivered to Maryam, and a spirit from Him. So, believe in Allah and His Messengers. Do not say “Three”. Stop it. That is good for you. Allah is the only One God. He is far too pure to have a son. To Him belongs what is in the heavens and what is in the earth. And Allah is enough to trust in.