The Celestial Testimony: A Multidisciplinary Commentary on Quranic Oaths by the Night and the Day

Presented by Zia H Shah MD

Audio teaser: The Science Behind Ancient Quranic Oaths

Abstract

The phenomenon of divine oaths (qasam) in the Quran represents a profound intersection of linguistic rhetoric, natural theology, and metaphysical assertion. This report examines the specific instances where the Creator takes an oath by the night and the day, serving to underscore the veracity of monotheism, the reality of the Resurrection, the legitimacy of the Prophet Muhammad, and the divine origin of the Quran. By analyzing the eight specific occurrences of oaths by the night—including 92:1, 74:33, 91:4, 81:17, 84:17, 89:2, 89:4, and 93:2—and collecting the corresponding oaths by the day and its various phases, this study presents a comprehensive scientific, philosophical, and theological commentary. Drawing heavily on the insights of Zia H. Shah MD, the analysis demonstrates how modern scientific discoveries in astrophysics, circadian biology, and solar physics act as a contemporary verification of these ancient scriptural pledges. The report argues that the regularity, balance, and purposeful design of the day-night cycle, which facilitates life on Earth, provides a rational basis for belief in a Wise Creator. Furthermore, the discussion posits that scientific achievements, symbolized by the Nobel Prize, serve as a modern eulogy to the Creator, as they uncover the elegant laws that the Quranic oaths invited humanity to ponder over fourteen centuries ago. The report concludes with a thematic epilogue on the alignment of the human soul with the cosmic order.

The Rhetorical and Metaphysical Function of Divine Oaths

In the context of 7th-century Arabic oratory, an oath was not merely a linguistic flourish but a solemn pledge used to validate a claim of supreme importance. When utilized in the Quran, these oaths (qasam) serve to grab the listener’s attention, underscore the gravity of the message to follow, and invite the reader to reflect on the intrinsic value of the entities sworn upon. Unlike human beings, who are instructed to swear only by God, the Creator may swear by any aspect of His creation to assert His sovereignty over it and to highlight its significance as a witness to truth.   

The objects chosen for these oaths—the sun, the moon, the stars, the winds, the mountains, and specifically the transition between night and day—are not random. They are presented as “evidence exhibits” from the natural world. By swearing upon these familiar yet awe-inspiring phenomena, the Quran bridges the gap between the observable world (Alam al-Shahadah) and the unseen realities (Alam al-Ghayb). The implication is that if the physical universe is governed by such precise, reliable, and observable laws, then the spiritual and moral laws revealed in the Quran are equally certain.   

Element of the Oath	Functional Description	Theological/Philosophical Implication
Al-Muqsam bihi	The object of the oath (e.g., The Night).	Highlights the object as a sign (āyah) of divine power and wisdom.
Al-Muqsam ‘alayhi	The subject or claim (e.g., The Resurrection).	Asserts that the claim is as inevitable as the natural phenomenon itself.
Correlation	The link between the oath and the subject.	Suggests a cosmic harmony where natural laws mirror moral truths.

The Eight Paradigmatic Oaths of the Night

The Quranic discourse on the night (al-layl) captures its various dimensions: its ability to enshroud, its stillness, its motion, and its inevitable departure. Each of the following eight occurrences serves a specific theological and psychological purpose.

The Enshrouding Night in Surah Al-Layl (92:1)

The oath “By the night when it covers” (92:1) utilizes the verb yaghsha, which implies a total blanketing or veiling of the world. This enshrouding is a fundamental requirement for life, acting as a thermal blanket that prevents the heat accumulated during the day from escaping into the vacuum of space too rapidly. Theologically, this enshrouding represents the periods of concealment or difficulty in human life, which are always paired with the “brightening” of relief.   

The Retreating Night in Surah Al-Muddaththir (74:33)

In Surah Al-Muddaththir, Allah swears by “the night when it retreats” (74:33). The term adbara signifies a turning back or a departure. This oath is followed by the assertion that the message is “one of the greatest” warnings (74:35). The departure of the night is a witness to the fact that falsehood and darkness must inevitably give way to the light of revelation.   

The Enveloping Night in Surah Ash-Shams (91:4)

In this surah, the night is sworn by “when it draws a veil over it [the sun]” (91:4). This phenomenological description highlights the relationship between the earth’s rotation and the disappearance of the sun from the observer’s view. The “covering” of the sun by the night is a testimony to the limits and contrasts built into creation, serving as a metaphor for the soul’s need for recovery and moral restraint.   

The Departing Night in Surah At-Takwir (81:17)

The oath “By the night when it departs” (81:17) uses the term ‘as’asa, which refers to the movement of the night at its beginning or end. In the context of the succeeding verse regarding the “breathing” morning, it highlights the transition. This oath validates the Quran as the word of an “honored messenger” (81:19), suggesting that revelation arrives to end the “night” of spiritual ignorance.   

The Collected Night in Surah Al-Inshiqaq (84:17)

Allah swears “By the night and what it envelops” (84:17). The Arabic wasaqa implies a gathering or collecting together. At night, the scattered creatures of the day return to their homes and nests. This gathering of the natural world serves as a witness to the eventual gathering of all souls for judgment, a central theme of Surah Al-Inshiqaq.   

The Ten Nights in Surah Al-Fajr (89:2)

The oath “By the ten nights” (89:2) is traditionally interpreted by scholars as referring to the first ten nights of Dhul-Hijjah or the last ten nights of Ramadan. These are periods of supreme spiritual merit. By swearing by these specific nights, the Quran highlights that time is not merely a mechanical measurement but has a “sacred rhythm” where certain periods are more blessed and “weighty” with God.   

The Passing Night in Surah Al-Fajr (89:4)

In the same surah, Allah swears “by the night when it passes” (89:4). This emphasizes the transience of the darkness. The oath serves as a comfort to the believer that no matter how long the “night” of trial or oppression lasts, it is inherently “on the move” toward an end. This motion is presented as “sufficient evidence for the wise” (89:5) of God’s active governance over history.   

The Stillness of Night in Surah Ad-Duha (93:2)

Surah Ad-Duha opens with an oath by “the night when it grows still” (saja) (93:2). This refers to the deep tranquility of the late hours. This stillness was a specific comfort to the Prophet Muhammad during a period when revelation had paused, reassuring him that the quiet was not abandonment but a necessary prelude to the renewal of divine favor.   

Comprehensive Collection of Oaths by the Day and Daylight

The Quranic oaths regarding the day (an-nahar) and its constituent parts—dawn (fajr), morning (subh), forenoon (duha), and afternoon (asr)—are as significant as those of the night. They primarily symbolize clarity, life, and the manifestation of truth.

Surah and Verse	Arabic Terminology	English Translation (Haleem/Yusuf Ali)	Theme/Subject
89:1	Al-Fajr	By the Dawn	The renewal of life and the light of justice.
91:3	An-Nahar	By the Day as it displays [the sun]	The visibility of truth and the power of light.
92:2	An-Nahar	By the Day as it brightens	The manifestation of divine mercy and guidance.
93:1	Ad-Duha	By the Morning Brightness	The favor of God and the clarity of mission.
81:18	As-Subh	By the Morning as it breathes	The biological and spiritual reawakening.
74:34	As-Subh	By the Morning when it brightens	The undeniable nature of the Quranic warning.
103:1	Al-Asr	By the fading day / time	The fleeting nature of human opportunity.
100:3	As-Subh	By the chargers at dawn	The decisiveness of action in the light of truth.

The Dawn (Al-Fajr)

The oath in 89:1 focuses on the specific moment when the first light tears through the darkness. Scientifically, this represents the scattering of light through the upper atmosphere before the sun rises. Theologically, it is the time when the hearts of believers are most fearful and close to their Lord, as they wake by choice to worship while the world is still in the “death” of sleep.   

The Morning Brightness (Ad-Duha)

The forenoon light sworn by in 93:1 represents the peak of solar clarity. It is the time when the sun’s warmth is most beneficial, mirroring the warmth of divine grace. Classical commentators note that duha refers to the time after sunrise when the sun’s rays fully “unveil” the world.   

The Full Daylight (An-Nahar)

In Surah Ash-Shams (91:3) and Surah Al-Layl (92:2), the “Day” is sworn by for its capacity to “display” and “brighten.” This is the time of maximum visibility and productivity, symbolizing the clarity of the soul that has been purified by God.   

The Afternoon (Al-Asr)

Surah Al-Asr (103:1) swears by “Time” or the “declining day.” This phase of the day serves as a metaphor for the closing stages of human life and history, urging immediate alignment with faith and righteous deeds before the “night” of death or judgment arrives.   

Scientific Commentary: The Cosmos as a Living Eulogy

Modern science provides the empirical data that fulfills the Quran’s invitation to “look again” at the signs in nature. Zia H. Shah MD argues that every scientific discovery, particularly those recognized by Nobel Prizes, is effectively a glorification of the Creator because it reveals the intricate mechanics behind the very phenomena God swears by.   

Astrophysics and Solar Physics

The oaths by the sun and day in Surah Ash-Shams (91:1-3) point to the sun as the “greatest light” and the sustainer of life. Modern stellar physics describes the sun as a nuclear furnace where hydrogen nuclei fuse into helium at temperatures of 15 million°C. This stable fusion, lasting for 4.5 billion years, is governed by the “fine-tuning” of physical constants such as gravity and the strong nuclear force. If the electromagnetic force were slightly different, stars like our sun would either explode or fail to ignite, precluding the possibility of the “daylight” the Quran celebrates.   

Furthermore, the “wrapping” of the day and night (39:5) is a result of the earth’s rotation on its axis and its 23.5° tilt, which creates the seasons and ensures moderate temperature distributions. If the earth rotated significantly slower, the day side would burn and the night side would freeze, annihilating life—a scientific reality that mirrors Imam al-Razi’s classical musings on the “necessity” of the day-night cycle for biological survival.   

Circadian Biology and Chronobiology

The oaths by the night’s stillness (93:2) and the morning’s “breathing” (81:18) find a modern parallel in circadian biology. The human body contains a “quiet clock” that governs hormones, digestion, and immunity. Darkness triggers the release of melatonin from the pineal gland, facilitating the “repair and defense” of the body.   

Scientific research has confirmed that nearly every organ—the liver, the gut, the brain—follows a 24-hour rhythm that is reset daily by light, particularly the “morning brightness”. The Quranic instruction to utilize the night for rest and the day for activity is not just a moral guideline but a biological imperative. Disruption of this rhythm (e.g., late-night wakefulness after Isha) is now linked to anxiety, mood disorders, and metabolic efficiency issues, validating the Prophet’s sunnah of early rest.   

Ecology and Atmospheric Science

Surah At-Takwir’s oath by the morning as it “breathes” (81:18) can be understood through the lens of photosynthesis and oxygen production. As the day “displays” the sun, plants begin the process of converting carbon dioxide and water into glucose and oxygen using solar energy. The morning literally “breathes” life back into the biosphere after the nightly pause in activity. Additionally, the “weighty clouds” mentioned in the related oaths of Surah Dhariyat (51:2) highlight the massive scale of the water cycle, with an average cumulus cloud weighing approximately 1.1×106 pounds (500,000 kg).   

Philosophical Commentary: Duality, Purpose, and Consciousness

The use of oaths by opposites—night and day, male and female, even and odd—presents a philosophical framework based on “purposeful pairing” and balance.   

The Argument from Duality

Surah Al-Layl (92) pairs the night and day with the creation of male and female. Philosophically, this suggests that the universe is not a chaotic accident but is built on complementary counterparts that work together to sustain existence. This duality mirrors the human condition, which is a tension between “rebellion and piety” (91:8) and “affluence and adversity” (89:15-16). The oaths establish that just as night and day are both necessary for the earth, different human choices and states are part of a larger, purposeful moral landscape.   

Teleology and the “Two Books”

The Quranic oaths promote a teleological view of the universe, where the regularity of the cosmos points to a “logos” or divine word upholding reality. This is the concept of the “Two Books”: the Book of Scripture (Quran) and the Book of Nature. The harmony found in the natural world serves as a tangible, ever-present proof of the message found in the text. The existence of an intelligible cosmos governed by laws that can be decoded by human consciousness is itself a “sign” that existence has an underlying meaning and intent.   

Consciousness and Transcendence

The oath by the “soul and how He perfected it” (91:7) following the celestial oaths suggests that human consciousness is the climax of these natural signs. The ability of the soul to sense the transcendent and yearn for meaning is not a biological fluke but a “pre-loaded” moral intuition (fitrah). Philosophically, the “daily resurrection” observed in the dawn serves as a nudge from the divine, validating the soul’s intuition that life is not limited to its material phase.   

Theological Commentary: Tawhid, Resurrection, and Prophetology

Theologically, the oaths are used to authenticate the three central pillars of the Islamic creed.

Tawhid (Monotheism)

The coordination of the sun and moon and the “wrapping” of night and day are cited as proofs of singular divine governance. If there were multiple gods, the “state of disorder” in the cosmos would be apparent (21:22). The “well-organized pathways” of the heavens (51:7) testify that the Creator is One. The precision of these cycles, where “no one apart from God could maintain this flawless rhythm,” is the ultimate theological argument for the unity of the Originator.   

Akhirah (The Hereafter)

The most critical function of oaths by the night and day is validating the Resurrection. The Quran uses the “revitalization of land” via rain and the “awakening of the world” at dawn as tangible analogies for the Day of Judgment. The same Omnipotence that governs the complex solar physics required for a single sunrise possesses the power to bring humanity back to life. The “passing night” of this world will inevitably yield to the “dawn” of the Hereafter.   

Wahy (Revelation) and Prophethood

Oaths by the celestial bodies are frequently used to introduce the Quran’s status as a “noble and preserved book” (56:77). By swearing by the “positions of the stars” or the “morning brightness,” God asserts that the Revelation is as much a part of the cosmic order as the stars themselves. For the Prophet Muhammad, the oath in Surah Ad-Duha was a direct theological assurance that the “night” of his fear was merely a pause, not an abandonment, as certain as the return of the sun.   

The Nobel Prize as Modern Glorification

A unique insight from Zia H. Shah MD is the characterization of scientific advancement as a form of Tasbīḥ (glorification). This section explores the relationship between specialized scientific fields and the Quranic oaths.   

Physics and the Cosmic Oaths

Nobel Prizes in Physics often deal with the “positions of the stars” (56:75) or the fundamental forces governing the “sky with its pathways” (51:7). Discoveries regarding black holes, gravitational waves, and the Big Bang expansion provide the empirical detail for the Quranic oaths by the heavens. Each discovery underscores that the “Lord of the Throne” operates through a “Master-Architect’s” design that is “without flaw” (67:3-4).   

Medicine and the Biological Oaths

Prizes in Physiology or Medicine that uncover the “master clock” of the circadian rhythm or the “quantum rules” of subatomic particles within cells directly elucidate the “perfection” of the human soul (91:7) and the “signs” in the night and day (30:23). These scientific achievements are viewed as “merely scratching the surface” of the reality established by God.   

Chemistry and the Oaths of Transformation

Chemistry reveals how the “scattering of winds” and the “bearing of loads” (51:1-2) function at a molecular level, from nitrogen fixation to the oxygen cycle. These Nobel-winning insights represent the human effort to understand the “limbs” of the universe, which Zia H. Shah MD describes as moving in absolute obedience to the “Sustainer”.   

Field of Discovery	Quranic Correlation	Theological Implication
Astrophysics	Oaths by the Sun, Stars, and Sky.	Testimony to the vast precision of the cosmic order.
Chronobiology	Oaths by the Night and the Dawn.	Evidence of the “fitrah” and the biological wisdom of prayer.
Meteorology	Oaths by Winds and Clouds.	Reflection on the “sustaining mercy” and providence of God.
Evolutionary Biology	“He who created male and female.”	Acknowledgement of the “flawless craftsmanship” of life.

Deep Insights: The Convergence of Scripture and Science

The relationship between the Quranic oaths and modern science is not merely one of accidental overlap but of “convergence”.   

The Reliability of the Natural Order

The precision of the day-night cycle is so reliable that it allows for the existence of human society and technology. This “dependability” of the Creator’s laws in nature is what bolsters the claim of the dependability of His promise regarding the Resurrection. If the sun rose at a different time every day without law, faith in a reliable God would be impossible. The “cosmic regularity” is the foundation of both science and theology.   

The Nuance of the Arabic Text

The specific words chosen for these oaths anticipate findings that were unknown in the 7th century. For instance, the use of tanaffasa (breathing) for the morning (81:18) aligns with the carbon-oxygen exchange of the biosphere. The term yaghsha (covering) for the night correctly identifies the night as a secondary phenomenon—a shadow—rather than a primary substance. The “wrapping” (takwir) of the day and night (39:5) subtly alludes to the spherical shape of the earth long before this was a common scientific fact.   

The Moral Dimension of the Cosmos

Perhaps the deepest insight is that the natural world is not a morally neutral space. By swearing by the sun, moon, day, and night before discussing the “purity of the soul” (91:1-9), the Quran asserts that the physical order and the moral order are part of the same system. Just as ignoring the physical laws of the day and night (e.g., through sleep deprivation) leads to biological “ruin,” ignoring the moral laws of righteousness leads to spiritual “ruin” (91:10).   

Thematic Epilogue: The Soul at Peace

The culmination of the Quranic oaths by the night and day is the transformation of the human psyche. In Surah Al-Fajr and Surah Ash-Shams, the celestial oaths serve as the “cosmic backdrop” for the lesson on the “Soul at Peace” (Nafse Mutmainah).   

The “Soul at Peace” is one that has meaningfully dwelled on the attributes of Allah through His signs in nature. It is a soul that, like the sun and the moon, has found its “sacred rhythm” and “orbits” in obedience to the Divine Will. This serene soul does not “oscillate to extremes” in times of affluence or adversity because it recognizes that both states are as transient and necessary as the alternation of night and day.   

Ultimately, the oaths invite humanity to move from “Self-Actualization to Self-Transcendence”. By observing the “breathing” morning, the “still” night, and the “radiant” day, the human being is nudged to recognize that they are part of a grand, living eulogy. The harmony, order, and beauty perceived in the universe are not arbitrary; they are “deliberate signs” calling the seeking soul back to its Source. In this view, the scientist in the laboratory and the believer in the mosque are both witnesses to the same Truth: that the “Heavens declare the glory of God,” and the night and day are the eternal witnesses to His promise.