The Qur’an is, above all, guidance for all mankind—showing humanity how to know its Creator, distinguish truth from falsehood, and live with faith, justice, mercy and responsibility. Yet its guidance is not exhausted by a superficial reading. Again and again, the Qur’an invites people to reflect, ponder and use reason. For those who approach its verses thoughtfully, its words unfold layers of divine wisdom about human nature, morality, history, creation and the purpose of life. Thus, the Qur’an is not merely a book to be recited; it is a book to be understood, contemplated and lived, with deeper reflection continually revealing lessons that shape both the mind and the heart.
For those seeking deeper meaning of Divine wisdom, Surah Al-Furqān 25:45 draws their attention to the simple but profound phenomenon of the moving shadow as a sign of Allah’s power and order in creation. The shadow lengthens, shortens, and changes direction according to the Sun, showing that even ordinary natural events follow precise laws and patterns. The verse invites us not merely to see nature, but to reflect on it: what seems commonplace is actually part of a finely ordered universe. Scientifically, the changing shadow corresponds to the Sun’s apparent movement across the sky due to Earth’s rotation, but the verse’s deeper purpose is spiritual—to awaken wonder, observation, humility, and recognition of the Creator behind the order of creation.
Let us try to explain the wisdom behind this single verse which could be understood more with a scientific mind or are the students of physics or are those lucky ones who try to reflect deeply on every verse of Qur'an to ponder over Divine wisdom.
THE QUR'AN SAYS
Actual verse (Surah Al-Furqān 25:45). The verse says:
أَلَمْ تَرَ إِلَىٰ رَبِّكَ كَيْفَ مَدَّ ٱلظِّلَّ وَلَوْ شَآءَ لَجَعَلَهُۥ سَاكِنًا ثُمَّ جَعَلْنَا ٱلشَّمْسَ عَلَيْهِ دَلِيلًا
“Have you not seen how your Lord extends the shadow? Had He willed, He could have made it stationary. Then We made the sun its guide.” — Al-Furqān 25:45
This verse becomes even clearer when read with the next verse:
ثُمَّ قَبَضْنَاهُ إِلَيْنَا قَبْضًا يَسِيرًا “Then We withdraw it towards Us, a gradual withdrawal.” — 25:46
The Qur’an is asking us to stop before an everyday phenomenon most people scarcely notice: a shadow is never random. Its position, direction and length are governed by the position of the Sun.
What does the verse mean? - CLASSICAL TAFSIR
Classical commentators understood the verse primarily as a sign of Allah's creative power and ordering of nature, rather than as a technical astronomy lesson. Ibn Kathīr records the explanation of Ibn Abbas and several early authorities that the “extended shadow” particularly refers to the broad shade between dawn and sunrise. As sunlight rises, that shade is progressively withdrawn. He explains “We made the sun its guide” to mean that the Sun reveals and determines the shadow: the phenomenon becomes perceptible through the contrast between light and shade.
This is part of a larger sequence in 25:45–49 where the Qur’an directs attention away from argument and toward observable creation: shadow and sunlight, night and sleep, day and activity, winds, clouds and life-giving rain. The argument is essentially:
The Striking Scientific relevance
Look carefully at the ordinary world. Its regularity itself is extraordinary. Modern physics and astronomy explain precisely why a shadow behaves as the verse describes.
- A shadow is determined by three things: light source → obstructing object → receiving surface.
- With the Sun as the light source, the direction and length of a terrestrial shadow depend directly on the Sun's apparent position in the sky.
- If a vertical object has height h, and the Sun's elevation above the horizon is α, its approximate shadow length is: L=h/tan(α)
- So:
- when the Sun is low, the shadow is long;
- as the Sun rises, the shadow gradually shortens;
- near local solar noon it reaches its daily minimum;
- as the Sun descends, the shadow lengthens again.
- This makes the expression: “We made the Sun its guide”
- Remarkably apt from an observational standpoint. Knowing the Sun's position tells you where the shadow will be; observing the shadow can conversely tell you something about the Sun's position.
- That principle is exactly what underlies a sundial.
But what makes the shadow move?
The Sun appears to travel across the sky from east to west. Modern astronomy tells us that this daily apparent movement results mainly from Earth rotating on its axis. NASA describes Earth's rotation as producing the approximately 24-hour solar day and explains that the Sun's changing position in our sky is related to Earth's rotation, revolution and axial tilt.
Therefore there is a beautiful chain:
Earth rotates
↓
Sun's apparent position changes
↓
angle of sunlight changes
↓
shadow changes direction and length
↓
shadow is gradually extended and withdrawn
That is exactly the kind of observable phenomenon 25:45–46 asks the reader to contemplate.
Does “If He willed, He could have made it stationary” refer to Earth's rotation?
This requires some care.
- It is tempting to say, “The Qur’an is explicitly talking about Earth's rotation.” That goes further than the text itself.
- Classical scholars did not interpret the verse as a technical declaration that Earth rotates. They understood سَاكِنًا — sākinan as fixed, unmoving or permanent: Allah could have made the condition of shade remain unchanged.
Modern astronomy helps us understand one physical mechanism responsible for changing shadows—Earth's rotation—but the Qur’an does not explicitly say here, “Earth rotates.”
So the stronger and more intellectually responsible formulation is:
The verse is fully compatible with the astronomical mechanism discovered through science, while its primary purpose is theological and reflective rather than to teach celestial mechanics.
That distinction is important when discussing the Qur’an with scientifically minded non-Muslims.
There is another fascinating scientific detail
The shadow does not suddenly jump from long to short. Rather, its position changes continuously and progressively.
Verse 46 says: قَبْضًا يَسِيرًا — qabḍan yasīrā meaning approximately a gentle/gradual withdrawal.
Ibn Kathīr cites the early explanation “little by little.” That is exactly what observation shows. Because Earth's rotation is continuous, the Sun's apparent angular position changes continuously and consequently the geometry of the shadow changes continuously.
NASA similarly explains that Earth's rotation causes the Sun's daily apparent movement across the sky.
Shadows also allowed humans to measure the world
This simple phenomenon became extraordinarily important scientifically. By studying the Sun and shadows, humans learned to determine:
- time of day, through sundials;
- direction, including the solar meridian;
- solar altitude, from shadow length;
- seasonal changes, from changing solar paths;
- and even aspects of Earth's geometry.
So when the Qur’an says: “We made the Sun a guide to it” there is a profound observational truth embedded in that wording: a shadow contains information about its source of illumination.
A deeper reflection
There is something beautiful about Allah choosing a shadow as an āyah (sign). A shadow has no independent existence. It changes because something greater than itself—the source of light—changes its relationship to it.
We usually notice the Sun. But the Qur’an asks us to notice what the Sun does.
Morning comes. Shadows stretch enormously across the ground. They shrink almost imperceptibly. At noon they gather close to objects. In the afternoon they begin extending in the opposite direction.
And this happens every day with mathematical regularity while most human beings walk through it without thinking. That is precisely the Qur’anic method of awakening consciousness: أَلَمْ تَرَ — “Have you not seen?”
The phenomenon was always before your eyes. The Qur’an simply asks you to look again.
The scientific lesson and spiritual lesson meet
Science answers: How does the shadow move? Earth rotates; the Sun's apparent altitude and azimuth change; therefore the direction and length of shadows change predictably.
The Qur’an asks a different question: Why do you pass through such an exquisitely ordered world without reflecting upon the One who established its order?
Thus I would summarize 25:45–46 as:
The moving shadow is not presented as a scientific miracle to replace astronomy; it is presented as an invitation to astronomy-like observation. Look carefully at a familiar phenomenon, discover the extraordinary order behind it, and allow knowledge of creation to lead you toward reflection upon the Creator.
This makes Al-Furqān 25:45–46 particularly valuable when speaking with a scientifically minded non-Muslim: the Qur’an is not asking the person to stop questioning nature, but to begin observing it more deeply. Although Qur'an is not a science book, yet it leave footprints that science later discovered to be true and relevant to our times. This is the Divine wisdom many of us are unaware of.
May Allāh (سبحانه و تعالى) help us understand Qur'ān and follow the Sunnah of Prophet Muhammad ﷺ, which is embodiment of commandments of Allah contained in the Qur'ān. May Allah help us to be like the ones He loves and let our lives be lived helping others and not making others' lives miserable or unlivable. May all our wrong doings, whether intentional or unintentional, be forgiven before the angel of death knocks on our door.
وَمَا عَلَيۡنَاۤ اِلَّا الۡبَلٰغُ الۡمُبِيۡنُ
(36:17) and our duty is no more than to clearly convey the Message.”
That is Our duty is only to convey to you the message that Allah has entrusted us with. Then it is for you to accept it or reject it. We have not been made responsible for making you accept it forcibly, and if you do not accept it, we shall not be seized in consequence of your disbelief, you will yourselves be answerable for your actions on Day of Resurrection.
May Allah forgive me if my posts ever imply a piety far greater than I possess. I am most in need of guidance.
Reading the Qur'ān should be a daily obligation of a Muslim - Reading it with translation will make it meaningful. But reading its Exegesis / Tafsir will make you understand it fully. It will also help the Muslims to have grasp over social issues and their answers discussed in the Qur'an and other matter related to inter faith so that they are able to discuss issues with non-Muslims with authority based on refences from Qur'an.
Note: When we mention God in our posts, we mean One True God, we call Allah in Islam, with no associates. Allah is the Sole Creator of all things, and that Allah is all-powerful and all-knowing. Allah has no offspring, no race, no gender, no body, and is unaffected by the characteristics of human life.
You may refer to more Selected Verses from Sūrah 25. Al-Furqān " اَلْفُرْقَانْ " (The Criterion), already published
You may also refer to our exclusive reference pages:
- Selected verses from selected Surahs of Al-Qurʾān for compiled verses from other surahs.
- Selected Verses from Al Qur'an about a Specific Subject (Reference Page) to know more about what Qur'an says about specific subjects
- Selected Verses from the Qur'an.
You may also refer to our Reference Pages and Understanding Al Qur'an for knowing more about Islam and Qur'ān.
Sources & Further Reading
Qur'an: 29:19–20
Disclaimer:
- The material for this post has been collected from the references given above. If anyone differs with the material contained in this post, one may consult the references and their authors. If someone has more material about the subject, he/she is most welcome to share in the comments box to make the post all encompassing.
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