Oath of the Cosmos and the Human Conscience: A Neuro-Cosmic Interpretation of Surah Al-Shams
A Divine and Scientific Prologue: Surah Al-Shams, revealed in Makkah and ranked as the 91st chapter of the Holy Quran, consists of only a few brief verses, yet its meanings and allusions plunge so deep that two great branches of modern science—astronomy and neurology—with all their advanced instruments, cannot fully unveil its secrets. This surah begins with multiple oaths of Almighty Allah, where He swears by the sun, the moon, the day, the night, the sky, and the earth. The purpose of these oaths is not merely emphasis, but to direct attention toward a magnificent truth embedded in the cosmos: every system has balance, every motion has symmetry, and this symmetry leads toward that Being who established it. Human consciousness, too, is subject to this same cosmic law. In the final section of Surah Al-Shams, it is decreed that the soul that purifies itself succeeds, and the one that suppresses it fails. This is the central point where astronomical symmetry and neurological balance converge. This article will analyse Surah Al-Shams in the light of both fields and establish that Quranic teachings not only align with modern scientific discoveries but transcend them significantly.
The Astronomical Foundation of Surah Al-Shams: A Declaration of Cosmic Harmony: The first verse of Surah Al-Shams proclaims: “Wa al-shamsi wa duhaaha” – By the sun and its forenoon brightness. The sun is the centre of our solar system, around which all planets, including Earth, revolve. Within the sun, hydrogen atoms fuse into helium, releasing energy equivalent to millions of hydrogen bombs every second. Yet the sun does not explode because its own gravitational force keeps this energy in perfect balance. The first principle of astronomical symmetry is that the sun’s temperature, its volume, its angle of light—all are established upon a calculated equilibrium described in mathematics as geodesic equations. This balance has persisted for billions of years, and the Quran has encapsulated it in the word duha (forenoon brightness). Duha is not merely light; it symbolises the energy that is the primary condition for life on Earth. Without this light, neither photosynthesis nor oxygen production, nor indeed human existence, would be possible.
The second verse declares: “Wa al-qamari idha talaaha” – By the moon when it follows it. The word talaaha is extremely significant, meaning to follow, to come after, or to walk in someone’s footsteps. Astronomically, the moon is Earth’s natural satellite that orbits our planet in an elliptical path, and in doing so, it reflects the sun’s light, which we call moonlight. The moon has no light of its own; it is merely a mirror of the sun’s rays. And when the Quran says that the moon follows the sun, it refers to that position in the moon’s orbit where it reflects the sun’s light in such a way that seasonal changes on Earth, the tidal system, and even the breeding cycles of certain animals become linked to it. Another subtle truth here is that the moon passes through all its phases each month—crescent, full, and waning—all of which follow a specific symmetry. Not a single phase is random. If the moon were to deviate merely one degree from its orbit, the oceans would breach their shores, the tidal system would collapse, and marine life would face extinction.
The third verse proclaims: “Wa al-nahaari idha jallaaha” – By the day when it displays it. The emergence of day is a result of Earth’s rotation on its own axis. When one side of Earth faces the sun, it experiences day, and the other side experiences night. The characteristic of daylight is that it clarifies objects, uncovering hidden secrets. The word jallaaha is derived from tajalli (manifestation), meaning that just as the sun illuminates the cosmos, the day completes that illumination. According to astronomical symmetry, the ratio of day length to night length depends on Earth’s axial tilt of 23.5 degrees. If this tilt were to increase or decrease by even one degree, extreme temperature zones would form on Earth, making life impossible.
The fourth verse states: “Wa al-layli idha yaghshaaha” – By the night when it covers it. Yaghshaaha means to cover, to conceal, or to veil. When night arrives, it hides the sun’s light from our eyes, but the sun remains bright; night merely darkens that part of the Earth. This darkness is also a blessing because during it, creatures rest, humans sleep, and certain vital chemical processes in plants are completed only at night. The covering action of the night also occurs under a specific symmetry, because when night falls on one region, day dawns on another. This balance is what makes life possible on the planet.
The fifth verse declares: “Wa al-samaa’i wa maa banaaha” – By the sky and what built it. Here, “sky” refers to the astronomical structure spread above us, comprising stars, galaxies, nebulae, and dark matter. Modern astronomy has proven that the entire structure of the universe is like a vast cosmic web, where everything moves according to a specific symmetry. From Newton to Einstein, all scientists have acknowledged the order of this cosmic system, and the Quran described this order fourteen centuries ago through the word banaaha (built it).
The sixth verse proclaims: “Wa al-ardi wa maa tahaaha” – By the earth and what spread it. Tahaaha means to spread, to extend, or to lay out a floor. Earth’s surface has been spread in such a way that humans can walk upon it, cultivate crops, and build cities. The internal structure of Earth also follows a symmetry, comprising the crust, mantle, and core. The balance of temperature and pressure between these layers is extremely precise. If this balance were disturbed, earthquakes and volcanoes would erupt, as occurs in some places, but the general order remains intact.
After these six oaths, Surah Al-Shams arrives at its seventh verse: “Wa nafsin wa maa sawwaaha” – By the soul and what proportioned it. Here the central point of the surah emerges. Just as the sun, the moon, the day, the night, the sky, and the earth all stand upon their respective balances, so too has the human soul been created upon a specific equilibrium. The word sawwaaha is derived from taswiyah, meaning to make even, to equalise, or to proportion. Just as a master architect maintains a specific ratio in all dimensions of a building, so too has a wondrous balance been placed within the human being between emotion and reason, spirit and ego, matter and meaning.
Neurological Balance: The Dual Structure of the Human Brain: The human brain is divided into two large hemispheres: the left hemisphere and the right hemisphere. The left hemisphere is generally responsible for logic, analysis, language, arithmetic, and order and sequence. We may call it the centre of intellect. The right hemisphere is responsible for emotions, imagination, music, art, spirituality, and spontaneous perception. We may call it the centre of the heart or soul. Between these two hemispheres lies a thick bundle of nerve fibres called the corpus callosum. These fibres continuously exchange information between the two hemispheres. When this exchange functions properly, a person possesses a balanced personality—they are both logical and emotional, capable of being firm and gentle alike. However, when this balance is disturbed—for instance, if the left hemisphere becomes overly dominant—the person becomes excessively dry, ruthless, and mechanical, calculating everything while suppressing emotions and failing to understand others’ pain. Conversely, if the right hemisphere dominates excessively, the person becomes overly emotional, prone to recklessness, illogical, and sometimes susceptible to psychological disorders.
The eighth verse of Surah Al-Shams declares: “Fa-alhamaha fujooraha wa taqwaaha” – Then He inspired it with its wickedness and its righteousness. This verse is extremely significant in the light of modern neurology. Fujoor means transgression, sin, and exceeding limits, while taqwa means piety, self-restraint, and respect for boundaries. The Quran states that both these qualities have been inspired (placed) within the soul. That is, at the neurological level, both pathways already exist within the human brain—one path that leads to evil, and another that leads to goodness. Modern neuroscience has established that there is a region in the frontal lobe called the prefrontal cortex, which is responsible for moral decision-making. When a person faces a difficult moral choice, neurons in this area begin firing rapidly. On the other hand, the limbic system controls emotions and desires. The balance between these two systems is what gives a person the power to choose between evil and good. This is precisely what the Quran calls inspiration. Inspiration does not mean that good or evil is forced upon a person; rather, it means that the human being has been given the fundamental ability to distinguish between the two. Just as an infant is born with the ability to suckle milk without being taught, so too has the recognition of right and wrong been granted to humans as an innate gift.
Verses Nine and Ten of Surah Al-Shams: The Criterion of Success and Failure: The ninth verse declares: “Qad aflaha man zakkaaha” – Indeed, he succeeds who purifies it. And the tenth verse states: “Wa qad khaaba man dassaaha” – And indeed, he fails who buries it. Here, the terms tazkiyah and tadsiyah appear. Tazkiyah means to cleanse the soul of its impurities, to return it to its original nature. Tadsiyah means to suppress the soul, to bury its potentials, and to drag it downward. At the neurological level, tazkiyah means strengthening the brain’s pathways that lead to taqwa (righteousness) and weakening those that lead to fujoor (wickedness). The principle of neuroplasticity states that the more often we repeat a particular action, the stronger the neural pathways associated with that action become. If a person lies every day, their brain strengthens the pathway for lying, making it increasingly difficult for them to tell the truth. Similarly, if a person prays regularly, gives charity, and treats others well, the neural pathways for empathy, compassion, and justice become stronger in their brain. This is tazkiyah.
Tadsiyah is its opposite. When a person repeats bad habits, they bury the pure potentials of their soul. Just as a gardener who stops watering their garden will see plants wither and weeds take over, similarly, if a person does not train their soul, the fujoor (evil) within them grows and taqwa weakens.
In Surah Al-Shams, the story of the people of Thamud is mentioned as a historical example. To them, Allah sent a she-camel as a sign and strictly admonished them not to prevent her from drinking water nor to harm her. But these people turned their intellect toward evil. They slaughtered the she-camel. Thereafter, divine punishment descended and destroyed them all. The neurological analysis of this event is that the people of Thamud had subordinated their prefrontal cortex (responsible for moral decisions) to their limbic system (which controls desires). They saw the she-camel drinking from their water reservoir, their fujoor was aroused, and they followed their desires until they violated a clear divine command. The result was that their consciousness became insensible, and they were destroyed.
The Reflection of Cosmic Symmetry in Humans: Just as all bodies in the astronomical system revolve in their respective orbits, so too does human consciousness revolve in its moral orbit. If the sun were to deviate even slightly from its orbit, the entire universe would be destroyed. Similarly, if human moral principles are displaced from their centre, a person’s personality is ruined. The sun’s light has no inconsistency; it spreads continuously and uniformly. Likewise, a person’s goodness should emanate consistently from within, not appearing sometimes and remaining hidden at other times. The moon’s following of the sun symbolises that a person’s own light—their personal virtues—is actually a reflection of their Creator’s light. Humans possess nothing from themselves; whatever they have is Allah’s gift. If a person forgets this and begins to consider themselves autonomous, their consciousness darkens, just as the moon retreats from the sun and hides in darkness.
The alternation of day and night reminds us of two states of human life: day represents the light of intellect when a person is awake and engaged in worldly affairs, and night represents the darkness of the soul when a person withdraws into themselves and remembers their Lord. Just as both day and night are necessary, so too are both a person’s intellect and their soul essential. One who relies solely on intellect becomes dry and soulless, while one who follows only emotions becomes wayward. The expanse of the sky and the earth reminds a person of the vastness of their own existence. Though the human body is only a few feet in size, a person’s consciousness and spirit extend across the vastness of the universe. When one purifies their soul, they begin to perceive these expanses; when one suppresses their soul, they become confined within the prison of their own desires.
Correlation between Modern Neuroscience and the Verses of Surah Al-Shams: Modern neuroscience has mapped the centres of emotions and desires within the brain in recent decades. The amygdala is the region that controls emotions such as fear, anger, and aggression. This is likely a centre of fujoor. The nucleus accumbens controls feelings of pleasure, reward, and gratification. This too can lead toward fujoor if unchecked, such as in the case of substance addiction, where this region becomes overstimulated. On the other hand, the ventromedial prefrontal cortex controls empathy, shame, and guilt. This is the centre of taqwa. When a person commits a wrong act, this region activates and attempts to restrain them.
The concept of fa-alhamaha fujooraha wa taqwaaha in Surah Al-Shams precisely indicates the neuroscientific reality that both possible paths already exist in the human brain, and the human being has been given the choice to select between them. This process of choice is what elevates humans above angels and below animals. Angels do not possess any pathway for fujoor, so their obedience is involuntary. Animals do not possess a pathway for taqwa, so they know nothing beyond their desires. Humans stand between the two, which is why they are tested.
The Neuroscientific Process of Tazkiyah: When a person practices tazkiyah—purifying their soul—significant neurochemical changes occur in their brain. Regular meditation, prayer, and remembrance of Allah increase the thickness of the prefrontal cortex. This is the greatest example of neuroplasticity. Similarly, those who give charity frequently and help others experience an increase in oxytocin, the hormone of love and trust, which makes them more peaceful and content. Conversely, those who remain immersed in anger, envy, and malice experience an increase in cortisol, the stress hormone, which is detrimental to their health. Those who become habitual liars develop a highly sensitive amygdala, reacting with fear or anger to trivial matters. These are the consequences of tadsiyah—suppressing the soul.
The declaration of Surah Al-Shams that qad aflaha man zakkaaha is not merely a moral exhortation but a scientific truth: those who train their souls are also mentally and physically healthier and more successful. Modern research has established that acts of worship such as prayer and fasting control blood pressure, reduce stress, and maintain optimal dopamine levels in the brain, keeping a person happy.
Lessons from the Event of Thamud: At the end of Surah Al-Shams, Allah mentions the event of Thamud to warn humans not to disrupt this balance. Thamud were given many signs, but they forced their intellect to turn away from these signs. They were a people who carved magnificent dwellings from rocks, meaning they were highly advanced in skill and knowledge. But this knowledge made them arrogant, and when their prophet Salih came to them, they denied him. The incident of the she-camel was a final test. When they slaughtered it, they signed their own destruction.
The neurological analysis of this event is that the people of Thamud had deactivated their prefrontal cortex, which recognises justice and truth, and replaced it with an overactive premotor cortex, which controls action. They knew that this she-camel was a sign from Allah, but their desire and rebellion compelled them to kill it. The balance between their perception and their action had collapsed. That is why punishment descended upon them. This event stands as a reminder in human history that any nation that destroys the balance of its consciousness is erased from the pages of existence. In today’s world, when humans use their intellect solely for material gain, when they neglect the spiritual dimension, they too are moving toward the same kind of destruction. Environmental pollution, wars, mental illnesses, and social decay are all signs that humanity has practiced tadsiyah of its own soul.
Balance Is the Key to Success: Surah Al-Shams is a brief yet comprehensive chapter that awakens humanity to a great truth: everything in the cosmos stands upon a specific balance, and human consciousness is a small reflection of that same cosmic law. The sun does not shift from its place, the moon does not stray from its orbit, day and night arrive at their appointed times, the sky stands firm in its height, and the earth is solid in its expansion. Similarly, within the human soul has been placed a natural balance between evil and good, fujoor and taqwa, rebellion and obedience. It is the human task to maintain this balance, cleanse the soul of impurities, and return their consciousness to its original nature. Modern neuroscience and astronomy have discovered these realities fourteen centuries later, whereas the Quran had described them in clear and simple language. This is the greatest evidence of the Quran’s divine origin—that its statements have never contradicted scientific facts but have always been confirmed by them.
