Does the Moon Light the Seven Heavens? Quran 71:15-16 Explained
A doubt is raised against Quran 71:15-16, claiming that the verse says the moon lights up all seven heavens — including the galaxy and the dark universe — which contradicts science. The doubt collapses on three independent grounds: the context of the verse, the Arabic language, and the physics of light.
The Verse
“Have you not seen how Allah created seven heavens in layers? And made the moon a light therein, and made the sun a lamp?”
First: The Context — Speech of Prophet Nuh (AS)
The verse says the moon is a light for the seven heavens. Does the moon really illuminate the galaxy and the dark universe? And what about the sun — does it also light up all seven layers?
The verses are not a standalone cosmological declaration — they are the words of Prophet Nuh (AS) addressed to his people, as recorded in Surah Nuh. They were spoken as a reminder and a call to faith, not as a detailed scientific statement about the structure of the cosmos. This does not make them less true; the story is accurate and does not conflict with logical facts and correct science — as will become clear from the responses below.
Second: Five Linguistic Responses from the Classical Scholars
The doubt assumes that “fihinna” (therein / in them) must mean the moon physically illuminates every part of all seven heavens simultaneously. This reveals either ignorance of Arabic or unfamiliarity with the Quran’s classical commentaries. The Arabic language has multiple well-established mechanisms that resolve this entirely.
Response 1 — Mentioning the Whole, Meaning the Part
Mentioning the whole and intending the part is a well-known and accepted form of eloquence in Arabic, and a recognised form of extended metaphor. If someone says “I lived in the city of Damascus,” it does not mean they occupied every street — only that they lived in part of it.
[!scholar] Imam al-Baghawi — Tafsir al-Baghawi (8/231), quoting al-Hasan al-Basri
“He made the moon therein a light — meaning: in the lowest heaven. Just as it is said: ‘I came to Banu Tamim,’ but he only came to some of them.”
Response 2 — Al-Alusi: “Fi” Means Location Within a Part
[!scholar] Al-Alusi — Ruh al-Ma’ani (21/319)
“The face illuminates the earth in the darkness of the night. He made it there — even though it is in one of them, which is the lowest heaven — just as it is said: ‘Zaid is in Baghdad,’ while he is in only a part of it.”
Response 3 — Al-Razi: The Sultan in Iraq
[!scholar] Imam al-Razi — Mafatih al-Ghayb (16/57)
“How did He say: ‘And He made the moon a light therein,’ when the moon is not in all of them, but in the lowest heaven? The answer is: this is like saying ‘the sultan is in Iraq.’ It does not mean that his essence is present in all regions of Iraq, but rather that his essence is in one region among its regions — and so it is here.”
Response 4 — “Fi” Can Mean “With”
The Arabic language recognises what is called the alternating of meanings of prepositions — where “fi” carries the meaning of “with” (مع).
[!scholar] Qatrib — cited in Fath al-Qadir by al-Shawkani (7/324)
“Fihinna means: with them — meaning He created the moon and the sun together with the creation of the heavens and the earth.” As in the verse of Imru’ al-Qais: “And does he enjoy whose last period is thirty months in three states?” — where “fi” means “with.”
Response 5 — Ibn Ashur: “Fi” Means “Among Its Group”
[!scholar] Al-Tahir ibn Ashur — Al-Tahrir wa al-Tanwir
“The circumstance of fi is for the occurrence of the contained within its container — such as a vessel — and also for the occurrence of something among its group, as in the hadith of intercession: ‘And this nation will remain among its hypocrites,’ and as in the saying of al-Numayri: ‘The scent of musk spread from the belly of Nu’man when Zainab walked with it among the women who were modest.’ The moon is in the sky that is in contact with the earth — called the lowest sky — and Allah knows best its dimensions.”
Third: The Indefiniteness of “Light” (نور)
A further linguistic precision: the word “nur” (light/نور) in the verse is indefinite — it carries no definite article (ال) and ends with tanwin. This is not incidental.
If you say: “I entered the room and found a pen, then I wrote with a pen, then I gave you a pen” — the listener understands three different pens.
If you say: “I entered the room and found the pen, then I wrote with the pen, then I gave you the pen” — the listener understands one specific pen throughout.
^^The verse says the moon is “a light” — not “the light” — meaning it is one light among many lights in the heavens, not the sole or supreme illuminator.^^
The correct reading is therefore:
The moon: a light for the heavens and the earth.
Sirius: a light for the heavens and the earth.
Canopus: a light for the heavens and the earth.
Venus: a light for the heavens and the earth.
None of them is the only or the greatest light for the heavens and the earth.
Fourth: The Scientific Answer — Does Light Die?
If a ray of light is emitted from a source, does it fade or persist? If that light is reflected from a mirror, does it disappear? Physicists disagree on this:
Most physicists hold that light does not die — it is scattered by particles present in the air and in space. The reason for disagreement regarding space specifically is the unresolved question of whether the universe is open or closed, and whether black holes are the only structures that absorb light. In Islam, we hold that the universe is finite — it is a created, nurtured being, and only Allah has no limit.
In practical terms: if you walk at night under starlight, every star and every planet — however small its light or the light reflected from it — contributes to the illumination that guides you. The same applies to the moon’s reflected light: it contributes to illuminating the lowest heaven, which is a part of the seven heavens — exactly as the classical scholars stated.
The following resource on the scientific miracles of the Quran and Sunnah provides further reading on this topic:
The verse is from the speech of Prophet Nuh (AS) — not a comprehensive cosmological treatise. The Arabic preposition “fi” has five classical scholarly interpretations, none of which requires the moon to illuminate all seven heavens entirely. The word “light” is indefinite, making the moon one light among many. And physically, the moon’s reflected light does illuminate the lowest heaven — which is part of the seven. The doubt rests on a misreading of Arabic, an ignorance of tafsir, and an unfamiliarity with how light behaves in physics.