(4:171) 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.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(4:171) O people of the Scripture (Jews and Christians)! Do not exceed the limits in your religion, nor say of Allah aught but the truth. The Messiah ‘Iesa (Jesus), son of Maryam (Mary), was (no more than) a Messenger of Allah and His Word, (“Be!” – and he was) which He bestowed on Maryam (Mary) and a spirit (Ruh) created by Him; so believe in Allah and His Messengers. Say not: “Three (trinity)!” Cease! (it is) better for you. For Allah is (the only) One Ilah (God), Glory be to Him (Far Exalted is He) above having a son. To Him belongs all that is in the heavens and all that is in the earth. And Allah is All-Sufficient as a Disposer of affairs.
Mohammed Marmaduke William Pickthall
(4:171) O People of the Scripture! Do not exaggerate in your religion nor utter aught concerning Allah save the truth. The Messiah, Jesus son of Mary, was only a messenger of Allah, and His word which He conveyed unto Mary, and a spirit from Him. So believe in Allah and His messengers, and say not “Three” – Cease! (it is) better for you! – Allah is only One Allah. Far is it removed from His Transcendent Majesty that He should have a son. His is all that is in the heavens and all that is in the earth. And Allah is sufficient as Defender.
Abdullah Yusuf Ali
(4:171) O People of the Book! Commit no excesses in your religion: Nor say of Allah aught but the truth. Christ Jesus the son of Mary was (no more than) a messenger of Allah, and His Word, which He bestowed on Mary, and a spirit proceeding from Him: so believe in Allah and His messengers. Say not “Trinity”: desist: it will be better for you: for Allah is one Allah: Glory be to Him: (far exalted is He) above having a son. To Him belong all things in the heavens and on earth. And enough is Allah as a Disposer of affairs.
Mohammad Habib Shakir
(4:171) O followers of the Book! do not exceed the limits in your religion, and do not speak (lies) against Allah, but (speak) the truth; the Messiah, Isa son of Marium is only an apostle of Allah and His Word which He communicated to Marium and a spirit from Him; believe therefore in Allah and His apostles, and say not, Three. Desist, it is better for you; Allah is only one Allah; far be It from His glory that He should have a son, whatever is in the heavens and whatever is in the earth is His, and Allah is sufficient for a Protector.
Dr. Ghali
(4:171) O population of the Book, (Or: Family of the Book, i.e; Jews and Christians) do not go beyond the bounds in your religion and do not say concerning Allah (anything) except the Truth. Surely the Masih, Isa son of Maryam, (The Messiah, Jesus sonof Mary) was only the Messenger of Allah, and His Word that He cast forth to Maryam, and a Spirit from Him. So, believe in Allah and His Messengers, and do not say, “Three.” Refrain; most charitable is it for you; surely Allah is only One God. All Extolment be to Him-that He should have a child. To Him (belongs) whatever is in the heavens and whatever is in the earth; and Allah suffices for an Ever-Trusted Trustee.
Ali Unal
(4:171) O People of the Book! Do not go beyond the bounds in your religion, and do not say anything of God but the truth. The Messiah, Jesus son of Mary, was but a Messenger of God, and a Word of His (Power) which He conveyed to Mary, and a spirit from Him. So believe in God (as the One, Unique God), and His Messengers (including Jesus, as Messenger); and do not say: (God is one of) a trinity. Give up (this assertion) (it is) for your own good (to do so). God is but One God; All-Glorified He is in that He is absolutely above having a son. To Him belongs whatever is in the heavens and whatever is on the earth. And God suffices as the One to be relied on, to Whom affairs should be referred.
Amatul Rahman Omar
(4:171) O people of the Scripture! do not go beyond the limits (of propriety) in the matter of your religion, nor say anything regarding Allâh except that which is perfectly true. The Messiah, Jesus, son of Mary was only a Messenger of Allâh, and (a fulfillment of) His word which He communicated to Mary, and a mercy from Him. Believe, therefore, in Allâh and in all His Messengers, and do not say, `(There are) three (Gods).´ Refrain (from following this doctrine) it will be better for you. Verily, Allâh is the One and only God. He is Holy. Far above having a son. To Him belongs whatever is in the heavens and whatever is in the earth. And Allâh suffices as a Disposer of affairs.
Literal
(4:171) You The Book`s people, do not exaggerate/exceed the limit in your religion, and do not say on (about) God except the truth , but the Messiah, Jesus, Mary`s son (is) God`s messenger and His word/expression He threw it away to Mary, and a Soul/Spirit (could be Gabriel) from Him
Ahmed Ali
(4:171) O people of the Book, do not be fanatical in your faith, and say nothing but the truth about God. The Messiah who is Jesus, son of Mary, was only an apostle of God, and a command of His which He sent to Mary, as a mercy from Him. So believe in God and His apostles, and do not call Him ‘Trinity’. Abstain from this for your own good; for God is only one God, and far from His glory is it to beget a son. All that is in the heavens and the earth belongs to Him; and sufficient is God for all help.
A. J. Arberry
(4:171) People of the Book, go not beyond the bounds in your religion, and say not as to God but the truth. The Messiah, Jesus son of Mary, was only the Messenger of God, and His Word that He committed to Mary, and a Spirit from Him. So believe in God and His Messengers, and say not, ‘Three.’ Refrain; better is it for you. God is only One God. Glory be to Him — That He should have a son! To Him belongs all that is in the heavens and in the earth; God suffices for a guardian.
Abdul Majid Daryabadi
(4:171) O ye people of the Book; exceed not the bounds in Your religion, and say not of Allah save that which is the truth. The Messiah ‘Isa, son of Maryam, is but an apostle of Allah and His word –He cast it upon Maryam– and a spirit from Him. Believe wherefore in Allah and His apostles, and say not: three. Desist, that it may be well for you. Allah is but the One God: hallowed be He that there should be unto Him a son! His is whatsoever is in the heavens and the earth, and sufficeth Allah as a Trustee.
Maulana Mohammad Ali
(4:171)-
Muhammad Sarwar
(4:171) People of the Book, do not exceed the limits of devotion in your religion or say anything about God which is not the Truth. Jesus, son of Mary, is only a Messenger of God, His Word, and a spirit from Him whom He conveyed to Mary. So have faith in God and His Messengers. Do not say that there are three gods. It is better for you to stop believing in the Trinity. There is only One God. He is too glorious to give birth to a son. To God belongs all that is in the heavens and the earth. God alone is a Sufficient Guardian for all.
Hamid Abdul Aziz
(4:171) But as for those who believe and do what is right, He will pay their due reward and will give increase to them from His Bounty. But as for those who are disdainful and arrogant, He will punish them with a grievous woe,
Faridul Haque
(4:171) O People given the Book(s)! Do not exaggerate in your religion nor say anything concerning Allah, but the truth
Talal Itani
(4:171) O People of the Scripture! Do not exaggerate in your religion, and do not say about God except the truth. The Messiah, Jesus, the son of Mary, is the Messenger of God, and His Word that He conveyed to Mary, and a Spirit from Him. So believe in God and His messengers, and do not say, Three. Refrainit is better for you. God is only one God. Glory be to Himthat He should have a son. To Him belongs everything in the heavens and the earth, and God is a sufficient Protector.
Ahmed Raza Khan
(4:171) O People given the Book(s)! Do not exaggerate in your religion nor say anything concerning Allah, but the truth; the Messiah, Eisa the son of Maryam, is purely a Noble Messenger of Allah, and His Word; which He sent towards Maryam, and a Spirit from Him; so believe in Allah and His Noble Messengers; and do not say Three; desist, for your own good; undoubtedly Allah is the only One God; Purity is to Him from begetting a child; to Him only belongs all whatever is in the heavens and all whatever is in the earth; and Allah is a Sufficient Trustee (of affairs).
Wahiduddin Khan
(4:171) People of the Book! Do not go to extremes in your religion. Say nothing but the truth about God. The Christ Jesus, son of Mary, was only a messenger of God and His word, conveyed to Mary, a spirit from Him. So believe in God and His messengers and do not say: “There are three [gods].” Desist, it will be better for you. Indeed, God is the one and only God. His Holiness is far above having a son. To Him belongs whatever is in the heavens and whatever is on the earth. And God is sufficient as a guardian.
Safi-ur-Rahman al-Mubarakpuri
(4:171) O People of the Scripture! Do not exceed the limits in your religion, nor say of Allah except the truth. Al-Masih `Isa, son of Maryam, was (no more than) a Messenger of Allah and His Word, which He bestowed on Maryam and a spirit from [created by] Him; so believe in Allah and His Messengers. Say not: “Three!” Cease! (it is) better for you. For Allah is (the only) One God, hallowed be He above having a son. To Him belongs all that is in the heavens and all that is in the earth. And Allah is All-Sufficient as a Disposer of affairs.
Ali Quli Qarai
(4:171) O People of the Book! Do not exceed the bounds in your religion, and do not attribute anything to Allah except the truth. The Messiah, Jesus son of Mary, was only an apostle of Allah, and His Word that He cast toward Mary and a spirit from Him. So have faith in Allah and His apostles, and do not say, [God is] a trinity. Relinquish [such a creed]! That is better for you. Allah is but the One God. He is far too immaculate to have any son. To Him belongs whatever is in the heavens and whatever is on the earth, and Allah suffices as trustee.
Hasan al-Fatih Qaribullah and Ahmad Darwish
(4:171) People of the Book, do not exaggerate your religion. Do not say about Allah except the truth. Indeed, the Messiah, Jesus son of Mary, is only a Messenger (and Prophet) of Allah, and His Word (Be) which He gave to Mary, and a (created) spirit by Him. So believe in Allah and His Messengers and do not say: ‘Trinity. ‘Refrain, it is better for you. Allah is only One God. Exaltations to Him that He should have son! To Him belongs all that is in the heavens and in the earth, it is sufficient that Allah is the Guardian.
That is translated surah An Nisa ayat 171 (QS 4: 171) in arabic and english text, may be useful.