Islamic view of the Trinity

In Christianity, the doctrine of the Trinity states that God is a single essence in which three distinct hypostases ("persons"): the Father, the Son, the Holy Spirit, exists consubstantially and co-eternally as a perichoresis. Islam considers the concept of any "plurality" within God to be a denial of monotheism. Monotheism in Islam, known as Tawhid, is the religion's central and single most important concept, upon which a Muslim's entire religious adherence rests. Shirk, the act of ascribing partners to God – whether they be sons, daughters, or other partners – is considered to be a form of unbelief in Islam. The Quran repeatedly and firmly asserts God's absolute oneness, thus ruling out the possibility of another being sharing his sovereignty or nature. In Islam, the Holy Spirit is believed to be the Angel Gabriel. Muslims have explicitly rejected Christian doctrines of the Trinity from an early date.

In the Quran
Three Quranic verses may directly refer to this doctrine,, , and. "O People of the Book! Do not go to extremes regarding your faith; say nothing about Allah except the truth. The Messiah, Jesus, son of Mary, was no more than a messenger of Allah and the fulfilment of His Word through Mary and a spirit ˹created by a command˺ from Him. So believe in Allah and His messengers and do not say, “Trinity.” Stop!—for your own good. Allah is only One God. Glory be to Him! He is far above having a son! To Him belongs whatever is in the heavens and whatever is on the earth. And Allah is sufficient as a Trustee of Affairs."

"5:17-In blasphemy indeed are those that say that Allah is Christ the son of Mary. Say: "Who then hath the least power against Allah, if His will were to destroy Christ the son of Mary, his mother, and all every - one that is on the earth? For to Allah belongeth the dominion of the heavens and the earth, and all that is between. He createth what He pleaseth. For Allah hath power over all things."

5:72 Those who say, “Allah is the Messiah, son of Mary,” have certainly fallen into disbelief. The Messiah ˹himself˺ said, “O Children of Israel! Worship Allah—my Lord and your Lord.” Whoever associates others with Allah ˹in worship˺ will surely be forbidden Paradise by Allah. Their home will be the Fire. And the wrongdoers will have no helpers. 5:73 Those who say, “Allah is one in a Trinity,” have certainly fallen into disbelief. There is only One God. If they do not stop saying this, those who disbelieve among them will be afflicted with a painful punishment. 5:74 Will they not turn to Allah in repentance and seek His forgiveness? And Allah is All-Forgiving, Most Merciful. 5:75 The Messiah, son of Mary, was no more than a messenger. ˹Many˺ messengers had ˹come and˺ gone before him. His mother was a woman of truth. They both ate food. See how We make the signs clear to them, yet see how they are deluded ˹from the truth˺!"

"5:116 And ˹on Judgment Day˺ Allah will say, “O Jesus, son of Mary! Did you ever ask the people to worship you and your mother as gods besides Allah?” He will answer, “Glory be to You! How could I ever say what I had no right to say? If I had said such a thing, you would have certainly known it. You know what is ˹hidden˺ within me, but I do not know what is within You. Indeed, You ˹alone˺ are the Knower of all unseen. 5:117 I never told them anything except what You ordered me to say: “Worship Allah—my Lord and your Lord!” And I was witness over them as long as I remained among them. But when You took me, You were the Witness over them—and You are a Witness over all things. 5:118 If You punish them, they belong to You after all. But if You forgive them, You are surely the Almighty, All-Wise.”"

Furthermore, verses, and  are relevant to the doctrine of "Trinity": "19:88 They say, “The Most Compassionate has offspring.” 19:89 You have certainly made an outrageous claim, 19:90 by which the heavens are about to burst, the earth to split apart, and the mountains to crumble to pieces 19:91 in protest of attributing children to the Most Compassionate. 19:92 It does not befit ˹the majesty of˺ the Most Compassionate to have children. 19:93 There is none in the heavens or the earth who will not return to the Most Compassionate in full submission."

"Allah has never had ˹any˺ offspring, nor is there any god besides Him. Otherwise, each god would have taken away what he created, and they would have tried to dominate one another. Glorified is Allah above what they claim!"

"Say, ˹O Prophet,˺ “He is Allah—One ˹and Indivisible˺; Allah—the Sustainer ˹needed by all˺. He has never had offspring, nor was He born. And there is none comparable to Him.”"

Discussion
Interpretation of these verses by modern scholars has been varied. Although the latter group of verses have usually been taken to reject the mainstream Christian view of Jesus as son of God, Watt has argued that they refer specifically to an unorthodox notion of "physical sonship". :47

Verse has been interpreted as a potential criticism of Syriac literature that references Jesus as "the third of three" and thus an attack on the view that Christ was divine. Hence, verses may merely be criticizing the idea that Jesus and God are the same. Alternatively, it may be a purposeful simplification of the Christian belief in the humanity and divinity of Christ in order to expose its potential weakness when viewed from the firmly monotheistic position of Islam. :47

Similarly, verse can be read as a rejection of Jesus' divinity. It is worth noting that in explaining these verses, early Muslim Quranic commentators noted that "the Christian 'three' was an internal characteristic of the godhead... rather than a series of external beings placed together with God."

Some Muslim commentators believe as referring to Mary as part of the Christian Trinity. Critics use this to argue that the Quran's author was mistaken about orthodox Christian beliefs, wherein Mary is a human and the third part of the Trinity is the Holy Spirit.

On the other hand, Muslims argue that past Collyridian Christians have explicitly believed Mary to be a divine being. However some historians, such as Averil Cameron, have been skeptical about whether Collyridians even existed and noted that Epiphanius is the only source for the group and that later authors simply refer to his text. There is no further proof that such a sect ever existed and it is very unlikely that they existed in the 7th century. Others argue that in fact does not allude to the Trinity since the term itself isn't stated in the verse and instances where the Trinity is explicitly mentioned (Q and ), Mary's alleged divine status is not noted. Some recent Western scholarship support a rhetorical understanding of the Quranic accusation of Mary's divinity claim in Q5:116; :47 arguing the verse generally gives an example of Shirk and admonishes it.