Even Brahma's hundred years are still, in the end, a single tick of the same clock.
A thousand ages make one of his days; a thousand more, one of his nights. The measure is not meant to impress you. It is meant to show you that scale alone never buys escape.
Those who understand that one day of Brahma spans a thousand four-age cycles, and his night the same, are the ones who truly know day and night.
The reading read whole, as one unhurried piece
Where it stands
Krishna has just named the abode reached beyond all return, the one place that once attained, no soul comes back from. Now he steps back to measure everything short of it, so you can see, in exact figures, how the loftiest world in creation still stands inside the reach of time.
The teaching
Take the measure as it is given. One day of Brahma, the highest being within the created order, spans a thousand cycles of the four ages, Krita, Treta, Dvapara, Kali. His night runs exactly as long. Reckoned through such days and nights, Brahma lives a hundred of his own years, and then he too falls. His world, the longest-lived seat anywhere in the universe, is bounded by time precisely because it can be measured at all, and what is measured has an end, and what ends dissolves, and what dissolves returns its beings to birth. This is not the arithmetic of an astronomer. It is offered so that a very natural hope, that reaching high enough must mean reaching safety, can be examined honestly and let go. Those who truly know this day and this night are not the people who track the hour by the sun and the moon. They are the far-seeing ones, who through yoga behold the whole rhythm of making and unmaking directly. The rest see only a little, and mistake their narrow sight for real knowledge of time. Hold what the measure is actually for: not to make you despair at the smallness of your own span, but to loosen your grip on any reward, however vast by comparison, that is still, after all, inside the same clock.
The doubt that rises
If even the highest, longest-lived heaven ends and sends its dwellers back, what kind of attainment, if any, actually lasts, and how would you recognize it if it does not announce itself in years or ages at all?
Where the paths divide
Read as settled arithmetic with an exceptionless consequence.
Bounded by time equals subject to return; there is no third possibility. Brahma's immense day and night confirm the rule rather than excuse him from it. What remains, on this reading, is to see what actually happens within that day and that night, which the verses that follow will now unfold.
Read from the brief comment on file, attributing the calendar to the Lord's will.
This entire ordering, from the smallest human day up to Brahma's vast one, is not an impersonal machine running on its own. It is the Lord's own resolve at work, extended even to the highest created being's calendar. The surviving comment stops there; it does not extend into a fuller argument beyond this attribution.
Read with 'thousand' loosened from its literal count.
Take 'thousand' here as simply 'many,' not an exact figure. The real subject becomes the supreme dissolution at the close of Brahma's entire two-part lifespan, not his ordinary daily round. And distinctively, 'night' is extended to the Lord Hari himself: not sleep in any ordinary sense, but a name for His actionless state, set against His active, creating state, displaying the unmanifest Self's own power.
Read as an answer to whether long duration means real escape.
It is the very same beings, not new ones, who wake at each cosmic day and grow still at each cosmic night, resting as potency rather than vanishing. What differs between rounds is only the mark of time's length. Since even the Prajapatis share this bounded rhythm, no duration, however immense, lifts them out of the ordinary nature of arising and passing away.
Read as the answer to a Puranic objection about the higher worlds' praised superiority.
The higher worlds are indeed praised as a sorrow-less seat above the three worlds, but their superiority was never a claim to being undying, only to lasting through more kalpas. Read this way, the whole arithmetic is aimed at dispassion, not despair: even the longest-lived seat is ringed by sleep and dissolution, and only the Lord's own abode, already named just before, stands entirely outside the clock.
Read in a plainer register, close to the verse's bare functional claim.
Every world is bounded because every world is measured; that is the whole mechanism, stated without further embellishment. The one distinction worth drawing among people is between those whose knowledge of time reaches this cosmic scale, called here the true knowers, and those whose sight stops at the rising and setting of the sun and moon.
All six readings agree that even Brahma's world ends, but they do not agree on what to make of that fact. Is the verse's real subject the ordinary daily count, or, as Madhva holds, a symbolic pointer to a still grander dissolution and even to the Lord's own state? Is duration simply irrelevant to freedom, as the Shaiva reading insists by identifying the same beings across every cycle, or does the ladder itself, as the Bhakti reading allows, still carry a seeker some real distance upward before the final step? This page does not choose among them.
A question to carry
Held next to a hundred years of Brahma, what in your own life are you quietly treating as though it will last, and what would it mean to measure it honestly against this clock instead?
Where this teaching travels
Verses that sit near this one, each going its own way; follow whichever calls you.
So take the measure as it is meant: not to make the vast feel small, but to make the truly lasting easier to recognize when it asks nothing at all of years or ages.
Each school is voiced from the commentators named above. Their full words, every translation, and where the schools agree and differ wait in the reading desk just below. Open the commentary desk.
Krishna has just named the abode reached beyond all return; here he turns to measure everything short of it, so the contrast between the timeless and the merely vast becomes exact.
Where they agreethe convergence
Across schools and centuries the commentators come to the same ground. These are the points they share, and the voices that hold each one.
One day of Brahma is a thousand four-age cycles, and his night is exactly as long; this is the plain arithmetic the verse gives.
Across Advaita, Viśiṣṭādvaita, BhaktiŚaṅkara · Madhusūdana · Rāmānuja · ŚrīdharaIn Śaṅkara, Madhusūdana, and 2 others’ words
A single day of Brahma, the highest being within the created order, lasts a thousand cycles of the four ages, and his night is exactly as long. Nearly every source reads 'age' here as the full four-age cycle, the chaturyuga, not a single age on its own, citing the same Puranic rule to fix the count.
The whole point of the number is that even Brahma's world, the loftiest in creation, is bounded by time and is for that reason still subject to return.
Across Advaita, Kashmir Śaiva, BhaktiŚaṅkara · Abhinavagupta · Śrīdhara · MadhusūdanaIn Śaṅkara, Abhinavagupta, and 2 others’ words
The entire point of naming this vast span is to show that even Brahma's world, the loftiest and longest-lived attainment anywhere in the universe, is bounded by time and is for that very reason still subject to return. Duration, however immense, is not the same thing as escape.
True knowers of day and night are the far-seeing yogins, not those who merely read the hour from sun and moon.
Across Advaita, Bhakti, Kashmir ŚaivaŚaṅkara · Madhusūdana · Śrīdhara · AbhinavaguptaIn Śaṅkara, Madhusūdana, and 2 others’ words
The true 'knowers of day and night' are not the people who simply track the hour by watching the sun and moon. Several sources insist that this narrower kind of knowing sees too little to earn the name. The real knowers are the yogins, the far-seeing ones whose insight actually reaches the scale of these cosmic cycles.
It is the very same beings who rise and rest across each cosmic cycle, so duration alone never lifts anyone out of the rule.
Across Kashmir Śaiva, AdvaitaAbhinavagupta · ŚaṅkaraIn Abhinavagupta and Śaṅkara’s words
Whatever is inside time eventually dissolves, and what dissolves returns its beings to birth. Abhinavagupta states the mechanism most explicitly: it is the very same beings who wake at each cosmic day and grow still at each cosmic night, so that even the great Prajapatis share the ordinary nature of arising and passing.
The purpose of the whole calculation is dispassion: let your longing move toward what does not run on this clock at all.
Across Bhakti, AdvaitaŚrīdhara · Madhusūdana · ŚaṅkaraIn Śrīdhara, Madhusūdana, and 1 others’ words
The practical force of the calculation is dispassion rather than accounting. Do not set your heart on even the highest, longest reward, because every reward still measured in time will end; only what stands genuinely outside this cosmic clock is worth the whole of one's longing.
This is the shared ground; it can be carried as it is. Below is where they differ.
Where they differthe divergence
Viśiṣṭādvaita, in their fuller words
On the brief passage available, Ramanuja's distinctive note is that this entire ordering of day and night, reaching from man up to Brahma, is the working of the Lord's own resolve, not an impersonal mechanism. The surviving comment does not extend further than this attribution of the calendar to the Lord's will.
Dvaita, in their fuller words
Madhva declines to take 'a thousand' literally, reading it instead as 'many,' and redirects the verse toward the supreme dissolution at the end of Brahma's full two-part lifespan. Distinctively, he also applies 'night' to Hari himself, the Lord's own actionless state set against His active, creating state.
Bhakti, in their fuller words
Sridhara answers a Puranic objection about the higher worlds' praised superiority by relocating that superiority: it lies only in lasting more kalpas, not in escaping dissolution. His arithmetic serves dispassion directly, closing on the point that only the Lord's own abode, already named in the previous verse, stands wholly outside this clock.
A modern reading, in their fuller words
Read in a plainer register, Madhusudana's compact comment isolates the verse's functional claim: every world is bound because every world is measured, and the only distinction worth drawing among people is between those whose knowledge of time reaches this cosmic scale and those whose sight stops at sunrise and sunset.
A few questions to carry
These ask for understanding, not recall; each answer is settled by the commentary itself.
For a second sitting
Carry this with youwhat stays
Let the sheer scale sit with you for a moment. A thousand four-age cycles is only one day for Brahma, and he lives a hundred such years before he too dissolves. Set beside that, your own single day is almost nothing, and even Brahma's vastness is, in its own way, almost nothing too, since it still ends. Let this thin out your grip on whatever reward you are currently hoping will last, and turn your longing toward what does not run on this clock at all.
So hold whatever you are hoping will last against this measure, and let your longing come to rest only on what a thousand ages could never end.
Read deeper
Everything a full study holds, folded below.
Word by word
All the commentary, woven together
The commentary, woven together
machine-assisted draft, pending review
Convergence
single day of Brahma, the highest being within the created order, lasts a thousand cycles of the four ages, and his night is exactly as long. Nearly every source reads 'age' here as the full four-age cycle, the chaturyuga, not a single age on its own, citing the same Puranic rule to fix the count.
Śaṅkarācārya · Madhusūdana Sarasvatī · Rāmānujācārya · Śrīdhara Svāmī
The entire point of naming this vast span is to show that even Brahma's world, the loftiest and longest-lived attainment anywhere in the universe, is bounded by time and is for that very reason still subject to return. Duration, however immense, is not the same thing as escape.
Śaṅkarācārya · Ācārya Abhinavagupta · Śrīdhara Svāmī · Madhusūdana Sarasvatī
The true 'knowers of day and night' are not the people who simply track the hour by watching the sun and moon. Several sources insist that this narrower kind of knowing sees too little to earn the name. The real knowers are the yogins, the far-seeing ones whose insight actually reaches the scale of these cosmic cycles.
Śaṅkarācārya · Madhusūdana Sarasvatī · Śrīdhara Svāmī · Ācārya Abhinavagupta
Whatever is inside time eventually dissolves, and what dissolves returns its beings to birth. Abhinavagupta states the mechanism most explicitly: it is the very same beings who wake at each cosmic day and grow still at each cosmic night, so that even the great Prajapatis share the ordinary nature of arising and passing.
Ācārya Abhinavagupta · Śaṅkarācārya
The practical force of the calculation is dispassion rather than accounting. Do not set your heart on even the highest, longest reward, because every reward still measured in time will end; only what stands genuinely outside this cosmic clock is worth the whole of one's longing.
Śrīdhara Svāmī · Madhusūdana Sarasvatī · Śaṅkarācārya
Divergence
Advaita Vedānta
Shankara reads the verse as settling a single equation: bounded by time equals subject to return, with no exception made for however grand the boundary is. His extant comment stays close to this arithmetic and its direct consequence, then hands off to the following verses to show what actually happens within Brahma's day and night.
Śaṅkarācārya
Viśiṣṭādvaita
On the brief passage available, Ramanuja's distinctive note is that this entire ordering of day and night, reaching from man up to Brahma, is the working of the Lord's own resolve, not an impersonal mechanism. The surviving comment does not extend further than this attribution of the calendar to the Lord's will.
Rāmānujācārya
Dvaita
Madhva declines to take 'a thousand' literally, reading it instead as 'many,' and redirects the verse toward the supreme dissolution at the end of Brahma's full two-part lifespan. Distinctively, he also applies 'night' to Hari himself, the Lord's own actionless state set against His active, creating state.
Madhvācārya
Kashmir Śaiva
Abhinavagupta answers the doubt that immense duration might amount to real escape. His reply is that the same beings, not new ones, wake and rest across each cosmic day and night, differing only by the mark of time's length; since even Brahma's rank shares this bounded rhythm, it shares the nature of arising and passing.
Ācārya Abhinavagupta
Bhakti
Sridhara answers a Puranic objection about the higher worlds' praised superiority by relocating that superiority: it lies only in lasting more kalpas, not in escaping dissolution. His arithmetic serves dispassion directly, closing on the point that only the Lord's own abode, already named in the previous verse, stands wholly outside this clock.
Śrīdhara Svāmī
Modern
Read in a plainer register, Madhusudana's compact comment isolates the verse's functional claim: every world is bound because every world is measured, and the only distinction worth drawing among people is between those whose knowledge of time reaches this cosmic scale and those whose sight stops at sunrise and sunset.
Madhusūdana Sarasvatī
A Seeker Asks
If even Brahma's own immense lifespan eventually ends, is there any point in aiming for a high spiritual attainment at all, or should I stop caring about scale entirely?
The verse is not asking you to stop caring about attainment; it is asking you to stop mistaking scale for safety. Reaching a very high, very long-lived state can still be a real and worthy attainment. What it cannot be, on this reckoning, is final, because anything still measured by time still has an end and still returns its dwellers to birth.
Śaṅkarācārya · Ācārya Abhinavagupta
The commentators do not counsel indifference to greatness; they counsel precision about what kind of greatness actually breaks the cycle. Ramanuja and Madhva, in their different ways, point past the created calendar toward the Lord himself as the one measure that is not simply another rung on this same time-bound ladder.
Rāmānujācārya · Madhvācārya
And Sridhara is direct that the exercise exists to produce dispassion, not despair. Once you see clearly that even the loftiest seat in creation is ringed by sleep and dissolution, your longing is freed to move toward the one abode that stands outside the clock altogether, rather than settling for a magnificent but temporary reward.
Śrīdhara Svāmī · Madhusūdana Sarasvatī
Contemplation
Let the sheer scale sit with you for a moment. A thousand four-age cycles is only one day for Brahma, and he lives a hundred such years before he too dissolves. Set beside that, your own single day is almost nothing, and even Brahma's vastness is, in its own way, almost nothing too, since it still ends. Let this thin out your grip on whatever reward you are currently hoping will last, and turn your longing toward what does not run on this clock at all.
Sit with this · sonnet-5-authored
All the translations and commentary
Pull up a chair.
You have come to sit with this verse. When you are ready to hear the translators and the commentators in full, open a tradition in the doorways below, or add a voice by name above.
Also hear this verse, tradition by tradition.