BG 8.17 — Akṣara-Brahma-Yoga

Bhagavad Gītā 8.17Chapter 8 · Akṣara-Brahma-Yoga · Krishna → Arjuna · anuṣṭubh

सहस्रयुगपर्यन्तमहर् यद् ब्रह्मणो विदुः ।

रात्रिं युगसहस्रान्तां ते ऽहोरात्रविदो जनाः ॥

sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ

rātriṃ yuga-sahasrāntāṃ te 'ho-rātra-vido janāḥ

spokensingle-voice recital; rendered via IndicF5 conditioned on a Sanskrit reference clip

meaning

A thousand yugas make Brahmā's single day; a thousand more make his night. Those who know this measure of time are the true knowers of day and night.

ekras · bhāṣya

A thousand yugas — that is Brahma's day. A thousand yugas — that is Brahma's night. Those who know this measure are the true aho-ratra-vidah. The verse is doing something specific: it gives the immense kala-frame that explains why Brahmaloka itself returns. Even Brahma's day-night is bounded.

Shankara reads the verse precisely. Brahmanah — Prajapati-Viraj — undergoes a day of one thousand yugas followed by an equal night, both rigidly bounded by kala. Because these cosmic cycles are kala-parichchhinna, all worlds within them, including the highest, must return. The aho-ratra-vidah — those who know day and night — are not those who track candra and arka but those who see the cosmic temporal frame for what it is.

Shridhara gives the richest calendrical gloss. One human year equals one divine ahoratra. Twelve thousand divine years equal one chatur-yuga. One thousand chatur-yugas equal Brahma's one day. Those who know this are the true aho-ratra-vidah — as opposed to those who track only the candra-arka cycle. The frame is not symbolic; it is computed.

Madhusudana reads the verse as answering the implicit question: why are even Brahmaloka's residents subject to return? Because kala-parichchhinnatva is their condition. He echoes the pauranika vakya on chatur-yuga-sahasra and adds, following Shridhara, that those who track only candra-arka belong to a smaller frame than the one Krishna names.

Ramanuja reads brahmanah as chatur-mukha — four-faced Brahma — whose very day-night rhythm is constituted by Bhagavan's samkalpa. The phrase mat-samkalpa-krita-ahoratra-vyavastha frames the verse: even cosmic time is kainkarya-space, the Lord's sovereign action expressing as duration.

Madhva reads the verse 8.17-8.19 as a unit establishing why reaching the Lord means no return. Sahasra is aneka-vachi — many, not strictly one thousand — and the night is Maha-Vishnu's ratri.

Vallabha cites the pauranika vakya: chatur-yuga-sahasram tu brahmanah dinam uchyate; Brahma's day is kala-pramita.

Context

where

Chapter 8 · Akṣara-Brahma-Yoga · meter anuṣṭubh

who speaks

Krishna → Arjuna

preceded by — BG 8.16

All worlds, including Brahma's own realm, lead back to rebirth. Reach me, and you are born no more.

What's going on

A thousand yugas make Brahmā's single day; a thousand more make his night. Those who know this measure of time are the true knowers of day and night.

Sūtras through this verse (24)

ŚrīdharaclassicalF

The Lord inside as inner rulerbetween

8.5Remember Me as the inner-ruler form.───→here8.17───→15.15Seated in every heart; memory comes from Me.

AbhinavaguptaclassicalG

Saṃvit: one referent under many namesbetween

8.3Brahman, ātman, all facets of one Lord.───→here8.17───→11.34Consciousness itself swallows the cosmos.

MadhvaclassicalT1

Hari is supreme — the running reading-rulebetween

8.3The 'imperishable Brahman' is the supreme person.───→here8.17───→9.16The sacrifice itself is named as Viṣṇu.

show all 24

ŚrīdharaclassicalH

The grammar of single-pointednessbetween

8.14Mind on no other, constantly remembers Me.───→here8.17───→9.13Great souls turn no mind to any other.

ŚrīdharaclassicalL

Chapter prefaces as the bhāṣya's spinebetween

8.1Now, the questions of Brahman and self.───→here8.17───→9.1The Lord is reached by pure devotion.

ŚrīdharaclassicalE

Inner cleansing reconciles work and knowingexit

8.7Without a clean mind, steady remembrance fails.───→here8.17───→

ŚrīdharaclassicalK

Death-memory as the test of daily habitexit

8.14Remembrance comes only from constant daily practice.───→here8.17───→

MadhusūdanaclassicalF

Every middle chapter opens with a bow to the teacherbetween

8.1I take refuge in Kāśirāja, the king of Kashi.───→here8.17───→9.1I praise Kāśirāja, king among gurus.

MadhusūdanaclassicalH

Krishna with form is the ground beneath formless Brahmanapproach

───→here8.17───→9.22I myself am the Lord, the Self of all.

MadhusūdanaclassicalJ

Two kinds of nature — divine and demonicapproach

───→here8.17───→9.13Great souls take refuge in divine nature.

Ekrasmodernend_of_life

End of life — the threshold tourbetween · v2

8.13Remembering Me───→here8.17───→15.7The jīva carries the senses

RāmānujaclassicalE

Bhakti as continuous recollectionbetween

8.14Easily reached by unbroken recollection.───→here8.17───→9.22For the one-pointed, I personally provide.

MadhvaclassicalT4

Liberation is bliss in body — not absorptionbetween

8.13The chant carries you to a place — not nothing.───→here8.17───→12.5The formless route is hard for a reason.

MadhvaclassicalT12

Closure by gloss — the small repertoirebetween

8.3'Imperishable' redirects to the supreme person.───→here8.17───→15.1'Above' is just Viṣṇu, the upward one.

JayatīrthaclassicalB

Pañcabheda — the five distinctions enforced verse by versebetween

8.4Adhiyajña is Viṣṇu, not the worshipper.───→here8.17───→12.3Avyakta worshippers stay plural, distinct.

JayatīrthaclassicalE

Vishnu-sarvottamatva read into apparently neutral wordsbetween

8.4Adhiyajña clause: viṣṇur eva.───→here8.17───→11.16Many-armed is Viṣṇu, not a pantheon.

RamsukhdasclassicalI

The Lord already inside the heartbetween

6.30See Me everywhere, I am never lost.───→here8.17───→8.22The highest Person, reached by the undivided.

Ramsukhdasclassical

Sādhaka Sañjīvanī commentary at this versebetween

───→here8.17───→

AbhinavaguptaclassicalC

Vision is the structural centerapproach

───→here8.17───→10.1Listen one more time — clearer before the pivot.

AbhinavaguptaclassicalH

Bhakti as non-dual recognitionapproach

───→here8.17───→9.22Consciousness tending its own self-knowing modes.

RāmānujaclassicalI

Vibhūti as evidence for antaryāminapproach

───→here8.17───→10.7Knowing the cases steadies the yoga.

Ekrasmodernmeditation

Meditation — the dhyāna tourexit · v2

8.12Om at the close───→here8.17───→

ĀnandagiriclassicalD

Praśna-bīja chapter openingsbetween

8.1Recap-and-bind: Ch 8 carries Ch 7 forward.───→here8.17───→13.1Ch 13 opens by binding to the middle hexad.

Gauravmodernmemorial_pastoral

Memorial Pastoralexit

8.6'Yam yam vapi smaran bhavam.' Whatever state of being one remembers at the last ───→here8.17───→

Śabda · lemmas (13 unique · 16 occurrences)

विदुः √vid — to know; to find (verbal root) · past indicative 3rd person plural verb
जनाः jana — person, people, folk · nominative masculine plural noun
सहस्र sahasra ×2 — thousand · compound

show all 13

युग yuga ×2 — age, era, world-cycle · compound
अहर् ahar ×2 — day · accusative neuter singular noun / compound
पर्यन्तम् paryanta — boundary, end (pari- + anta) · accusative neuter singular noun
यत् yad — which, who (relative pronoun) · accusative neuter singular noun
ब्रह्मणः brahman — Brahman (the Absolute); also: the Veda; sacred utterance · genitive masculine singular noun
रात्रिम् rātri — night · accusative feminine singular noun
अन्ताम् anta — end, conclusion, limit, death · accusative feminine singular noun
ते tad — that (distal demonstrative); also 3rd-person pronoun · nominative masculine plural noun
रात्र rātra — night · compound
विदः vid — to know; to find (verbal root) · nominative masculine plural noun

Praśna · so what (7)

01If even Brahmaloka — the summit of human aspiration across lifetimes — is dissolved at the end of Brahmā's night, what soteriological goal is worth sustained effort?
02The verse distinguishes aho-rātra-vidaḥ (those who truly know cosmic time) from ordinary solar-lunar trackers — what kind of knowledge qualifies as 'truly knowing time,' and how is it cultivated?

show all 7

03Madhva reads sahasra as 'many' rather than strictly one thousand — does the precision of the cosmological number matter doctrinally, or is the point the sheer incomprehensibility of the scale?
04If Brahmā's day and night are equal in duration (both yuga-sahasra), what is the implication for the symmetry of creation and dissolution — and does any school find asymmetry meaningful?
05Rāmānuja frames this as Bhagavān's saṃkalpa structuring time — does that make cosmic dissolution an act of grace, punishment, or neutral play?
06Śrīdhara notes that brahmaṇaḥ is an upalakṣaṇa pointing to Maharloka and beyond — how high does the verse's claim of perishability extend, and where (if anywhere) does the text say it stops?
07All schools agree all worlds within Brahmā's calendar are puna-rāvartī (returnable) — yet they disagree on the exit condition. What is the minimal common structure across schools for 'escaping the cycle'?

Vyavahāra · try it in your life

Advaita

When a long-term project, relationship, or institution you have built faces dissolution, treat it as a Brahmā-night arriving on its schedule — not as failure. The aho-rātra-vid (one who knows cosmic day-night) does not cling to the day because the night is guaranteed; practice non-attachment to outcomes precisely calibrated to their temporal scale.

Viśiṣṭādvaita

Frame your daily schedule as operating inside Bhagavān's mat-saṃkalpa (sovereign intention): morning (creation-phase) and night (dissolution-phase) are not neutral clock-ticks but the Lord's ordered rhythm. Begin and close each day with a brief act of kainkarya — offering the day's first and last actions as service — so that even your circadian time becomes participation in cosmic ahorātra.

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Dvaita

When facing an ending — job loss, death of a loved one, collapse of a plan — recall dvipararādha-pralaya: Brahmā's own lifespan ends. No outcome you are protecting is more durable than Brahmā's day. Direct the energy spent on preservation toward smaraṇa (remembrance) of Hari, the one entity Madhva says stands outside all counted nights.

Śuddhādvaita

Treat creative sprints and fallow periods as Kṛṣṇa's prasāda-extension and prasāda-withdrawal respectively — not as your productivity succeeding or failing. The equal length of Brahmā's day and night means neither productivity nor rest is more 'real.' Enter each pause as a mini-pralaya: let the prior form dissolve cleanly so the next sṛṣṭi (creation) can emerge from Kṛṣṇa's fresh will rather than your carried-over anxiety.

Bhakti

Śrīdhara's distinction between alpa-darśin (narrow-vision) and true aho-rātra-vid maps onto intellectual humility: before dismissing a difficulty as 'taking too long,' ask whether you are tracking candra-arka time (surface deadlines) or the deeper rhythm of how understanding actually matures. Extend patience to yourself and students by calibrating expectations to the real temporal scale of the work.

Advaita-Bhakti

Madhusūdana's synthesis: use cosmological scale as a svalpa-darśitva (narrow-vision) detector in daily decisions. When urgency or fear contract your perspective to the next hour or quarter, consciously zoom to Brahmā's day — 4.32 billion years — then zoom back. The contrast does not produce paralysis; it produces the equanimity of the yogin who acts fully in the moment precisely because he is not over-invested in its permanence.

Adhiṣṭhāna · substrate signature

substratev2.6-frozen

parserByT5-Sanskrit-multitask (Nehrdich/Hellwig/Keutzer EMNLP 2024)

mūlaBelvalkar critical edition (BORI 1947), via Ambuda multi-witness

show all metadata

weightsa=1 · b=0.01 · e_v=0.005 · z=0.2 · h=0 · th=0.01

anchorfit on Ramsukhdas's Sādhak Sañjīvanī (1980), frozen across the eight-commentator panel; cross-validated R@4 = 71.6% on Śaṅkara

extracted2026-04-21

methodPaper 1, Section II.B

↓ view raw per-verse object (JSON)↗ per-verse-object schema ↗ substrate code (MIT) + data (CC-BY 4.0)

The schema generalizes to any bounded-polysemy corpus with discrete primary text units, attested witness traditions, identifiable schools, and formal substrate. Port the per-verse object; refit weights on a domain-appropriate Layer-3 anchor; ship.

Bhagavad Gītā Chapter 8, Verse 17: Krishna to Arjuna — Akṣara-Brahma-Yoga