What does « Light / Illumination » mean in the Quran?

Indeed, We sent down the Torah, in which was guidance and light. The prophets who submitted [to Allah] judged by it for the Jews, as did the rabbis and scholars by that with which they were entrusted of the Scripture of Allah, and they were witnesses thereto. So do not fear the people but fear Me, and do not exchange My verses for a small price. And whoever does not judge by what Allah has revealed - then it is those who are the disbelievers.

And We sent, following in their footsteps, Jesus, the son of Mary, confirming that which came before him in the Torah; and We gave him the Gospel, in which was guidance and light and confirming that which preceded it of the Torah as guidance and instruction for the righteous.

[All] praise is [due] to Allah, who created the heavens and the earth and made the darkness and the light. Then those who disbelieve equate [others] with their Lord.

And they did not appraise Allah with true appraisal when they said, "Allah did not reveal to a human being anything." Say, "Who revealed the Scripture that Moses brought as light and guidance to the people? You [Jews] make it into pages, disclosing [some of] it and concealing much. And you were taught that which you knew not - neither you nor your fathers." Say, "Allah [revealed it]." Then leave them in their [empty] discourse, amusing themselves.

And is one who was dead and We gave him life and made for him light by which to walk among the people like one who is in darkness, never to emerge therefrom? Thus it has been made pleasing to the disbelievers that which they were doing.

Those who follow the Messenger, the unlettered prophet, whom they find written in what they have of the Torah and the Gospel, who enjoins upon them what is right and forbids them what is wrong and makes lawful for them the good things and prohibits for them the evil and relieves them of their burden and the shackles which were upon them. So they who have believed in him, honored him, supported him and followed the light which was sent down with him - it is those who will be the successful.

They want to extinguish the light of Allah with their mouths, but Allah refuses except to perfect His light, although the disbelievers dislike it.

It is He who made the sun a shining light and the moon a derived light and determined for it phases - that you may know the number of years and account [of time]. Allah has not created this except in truth. He details the signs for a people who know

Say, "Who is Lord of the heavens and earth?" Say, "Allah." Say, "Have you then taken besides Him allies not possessing [even] for themselves any benefit or any harm?" Say, "Is the blind equivalent to the seeing? Or is darkness equivalent to light? Or have they attributed to Allah partners who created like His creation so that the creation [of each] seemed similar to them?" Say, "Allah is the Creator of all things, and He is the One, the Prevailing."

Alif, Lam, Ra. [This is] a Book which We have revealed to you, [O Muhammad], that you might bring mankind out of darknesses into the light by permission of their Lord - to the path of the Exalted in Might, the Praiseworthy -

And We certainly sent Moses with Our signs, [saying], "Bring out your people from darknesses into the light and remind them of the days of Allah." Indeed in that are signs for everyone patient and grateful.

Allah is the Light of the heavens and the earth. The example of His light is like a niche within which is a lamp, the lamp is within glass, the glass as if it were a pearly [white] star lit from [the oil of] a blessed olive tree, neither of the east nor of the west, whose oil would almost glow even if untouched by fire. Light upon light. Allah guides to His light whom He wills. And Allah presents examples for the people, and Allah is Knowing of all things.

Or [they are] like darknesses within an unfathomable sea which is covered by waves, upon which are waves, over which are clouds - darknesses, some of them upon others. When one puts out his hand [therein], he can hardly see it. And he to whom Allah has not granted light - for him there is no light.

It is He who confers blessing upon you, and His angels [ask Him to do so] that He may bring you out from darknesses into the light. And ever is He, to the believers, Merciful.

Nor are the darknesses and the light,

So is one whose breast Allah has expanded to [accept] Islam and he is upon a light from his Lord [like one whose heart rejects it]? Then woe to those whose hearts are hardened against the remembrance of Allah. Those are in manifest error.

And the earth will shine with the light of its Lord, and the record [of deeds] will be placed, and the prophets and the witnesses will be brought, and it will be judged between them in truth, and they will not be wronged.

And thus We have revealed to you an inspiration of Our command. You did not know what is the Book or [what is] faith, but We have made it a light by which We guide whom We will of Our servants. And indeed, [O Muhammad], you guide to a straight path -

It is He who sends down upon His Servant [Muhammad] verses of clear evidence that He may bring you out from darknesses into the light. And indeed, Allah is to you Kind and Merciful.

On the Day you see the believing men and believing women, their light proceeding before them and on their right, [it will be said], "Your good tidings today are [of] gardens beneath which rivers flow, wherein you will abide eternally." That is what is the great attainment.

On the [same] Day the hypocrite men and hypocrite women will say to those who believed, "Wait for us that we may acquire some of your light." It will be said, "Go back behind you and seek light." And a wall will be placed between them with a door, its interior containing mercy, but on the outside of it is torment.

And those who have believed in Allah and His messengers - those are [in the ranks of] the supporters of truth and the martyrs, with their Lord. For them is their reward and their light. But those who have disbelieved and denied Our verses - those are the companions of Hellfire.

O you who have believed, fear Allah and believe in His Messenger; He will [then] give you a double portion of His mercy and make for you a light by which you will walk and forgive you; and Allah is Forgiving and Merciful.

They want to extinguish the light of Allah with their mouths, but Allah will perfect His light, although the disbelievers dislike it.

So believe in Allah and His Messenger and the Qur'an which We have sent down. And Allah is Acquainted with what you do.