The sources of knowledge in Sanātana Dharma
प्रमाण
Also written: sources of hinduism · hindu scriptures list · shruti smriti agama nigama · sanatana dharma scriptures · pramana · vedic literature
No other tradition preserved a library of this size, and none organised it so carefully. Sanātana Dharma does not have 'a holy book'. It has a ranked body of knowledge with explicit rules about which text outranks which, what each is for, and what to do when two of them disagree.
The two great streams: Nigama and Āgama
The whole of revealed knowledge divides into two streams that run side by side through the entire tradition. They are not rivals; most practising traditions use both, and many texts belong to both.
| Nigama — निगम | Āgama — आगम | |
|---|---|---|
| Meaning | 'That which has come down' — the Vedic stream | 'That which has come' — the revealed tantric-sectarian stream |
| Form | Impersonal revelation heard by the ṛṣis (apauruṣeya) | Dialogue: Śiva teaches Devī, or Devī asks and Śiva answers; Viṣṇu to Lakṣmī |
| Centre of gravity | Yajña — the fire offering; mantra; cosmic order | Pūjā — image and temple worship; dīkṣā (initiation); mantra and yantra |
| Eligibility | Traditionally restricted by adhikāra and stage of study | Open through initiation, explicitly including those excluded elsewhere |
| Typical content | Saṁhitā, Brāhmaṇa, Āraṇyaka, Upaniṣad | Jñāna, yoga, kriyā and caryā pādas — philosophy, practice, ritual, conduct |
| Living result | The Vedic rites, saṃskāras, the śrauta and smārta tradition | Every temple in India, and the Śaiva, Śākta and Vaiṣṇava traditions |
Śruti and Smṛti — heard and remembered
| Śruti — श्रुति | Smṛti — स्मृति | |
|---|---|---|
| Literally | That which was heard | That which was remembered |
| Authorship | Apauruṣeya — not of human authorship; seen, not composed | Human authors, named, and datable |
| Authority | Highest. Self-valid where it speaks | Derived. Valid because it restates śruti |
| Contents | The four Vedas in all four of their layers — including the Upaniṣads | Vedāṅga, Itihāsa, Purāṇa, Dharma Śāstra, Sūtra, Āgama, Darśana, Kāvya |
| When they conflict | Śruti prevails, without argument | Smṛti yields, and is reinterpreted |
| Fixity | Preserved syllable-perfect; not revisable | Explicitly revisable by age and circumstance — yuga-dharma |
The whole library at a glance
Śruti — the Vedas
Ṛg, Yajur, Sāma, Atharva; each with Saṁhitā, Brāhmaṇa, Āraṇyaka and Upaniṣad.
Vedāṅga
Śikṣā, Kalpa, Vyākaraṇa, Nirukta, Chandas, Jyotiṣa — the six sciences without which the Veda cannot be used.
Upaveda
Āyurveda, Dhanurveda, Gāndharvaveda and Sthāpatya/Artha — medicine, arms, music and building.
Itihāsa
'Thus it happened' — dharma taught through lived history rather than precept.
Purāṇa
Cosmology, genealogy, dissolution and recreation, and the lives of the deities.
Dharma Śāstra
Manu, Yājñavalkya, Nārada, Parāśara and the rest — conduct, society, and its own rules of change.
Sūtra literature
Śrauta, Gṛhya and Dharma Sūtras; the six Darśana Sūtras; Pāṇini and Patañjali.
Āgama and Tantra
The revealed manuals of temple, image, initiation, mantra and yantra.
Darśana
Nyāya, Vaiśeṣika, Sāṅkhya, Yoga, Mīmāṁsā, Vedānta — six complete systems.
Upaniṣad
108 in the received list, ten to thirteen principal; the source of Vedānta.
Bhagavad Gītā
700 verses inside the Mahābhārata; one of the three foundations of Vedānta.
Brahma Sūtra
555 aphorisms reconciling the Upaniṣads; every Vedānta school is a commentary on it.
How a question is actually settled
- Śruti — if the Veda speaks directly on the matter, that ends it.
- Smṛti — where śruti is silent, the remembered texts apply.
- Sadācāra — the settled conduct of those who know and live the Veda.
- Ātmatuṣṭi — what satisfies one's own purified conscience, when the first three are silent.
There is a fifth principle underneath all four: deśa, kāla, pātra — place, time and person. A rule made for one place, age and kind of person is not automatically binding on another. This is stated within the Dharma Śāstra itself, not imported later to soften it.
The six pramāṇas — how anything is known at all
Beneath the whole library sits a theory of knowledge. The schools differ on how many means of valid knowledge there are; Advaita Vedānta accepts six, Nyāya four, Vaiśeṣika and Sāṅkhya three, Cārvāka only one.
| Pramāṇa | Means of knowing | Accepted by |
|---|---|---|
| Pratyakṣa | Direct perception | All schools, including Cārvāka |
| Anumāna | Inference — smoke, therefore fire | All but Cārvāka |
| Upamāna | Comparison — knowing a gavaya by likeness to a cow | Nyāya, Mīmāṁsā, Vedānta |
| Śabda / Āgama | Reliable testimony, above all revealed word | Nyāya, Sāṅkhya, Yoga, Mīmāṁsā, Vedānta |
| Arthāpatti | Postulation — 'he is fat and never eats by day', therefore he eats at night | Mīmāṁsā, Advaita Vedānta |
| Anupalabdhi | Non-apprehension — knowing absence by not perceiving | Bhāṭṭa Mīmāṁsā, Advaita Vedānta |
In this section
Śruti — that which was heard
What apauruṣeya means, how the Veda was preserved syllable-perfect for millennia without writing, and why śruti holds unconditional authority.
Smṛti — that which was remembered
The vast human-authored body: Vedāṅga, Itihāsa, Purāṇa, Dharma Śāstra, Sūtra, Darśana, Āgama and Kāvya — derived in authority, revisable by design, and where almost all lived practice actually comes from.
Nigama and Āgama — the two revealed streams
The Vedic and the Tantric revelations: their different forms, their different eligibility rules, why every temple in India stands on the Āgama side, and how the two were woven into one practice.
The four Vedas
Ṛgveda, Yajurveda, Sāmaveda and Atharvaveda — what each contains, the priest each belongs to, its śākhās, and the four layers every Veda carries.
The six Vedāṅgas — the limbs of the Veda
Śikṣā, Kalpa, Vyākaraṇa, Nirukta, Chandas and Jyotiṣa — the six sciences without which the Veda cannot be pronounced, performed, parsed, understood, measured or timed.
The four Upavedas — the applied sciences
Āyurveda, Dhanurveda, Gāndharvaveda and Sthāpatyaveda — medicine, the science of arms, music and dance, and architecture; each attached to one of the four Vedas.
Itihāsa — Rāmāyaṇa and Mahābhārata
'Thus indeed it was.' The two great histories: what each teaches, why the Mahābhārata refuses easy answers, and why dharma is taught through story rather than precept.
The Purāṇas
Eighteen Mahāpurāṇas and eighteen Upapurāṇas: the five marks that define a Purāṇa, their division by guṇa, and their role as the Veda made available to everyone.
Dharma Śāstra — the literature of conduct
Manu, Yājñavalkya, Nārada, Parāśara and the rest: what the law books cover, how they rank against śruti, their own rules for their own obsolescence, and how to read them honestly today.
The Sūtra literature
The aphoristic form: what a sūtra is, the ritual sūtras, the six darśana sūtras, and why the tradition compressed whole systems into thread-like statements.
The Upaniṣads
The end of the Veda: what the word means, the 108 of the Muktikā list and the principal ten to thirteen, the four mahāvākyas, and the questions the Upaniṣads actually ask.
Bhagavad Gītā
Seven hundred verses in eighteen chapters: the setting, the structure, the three yogas, the great verses, and why a book set on a battlefield is the tradition's most universal text.
Brahma Sūtra
Bādarāyaṇa's 555 aphorisms in four chapters: the reasoned reconciliation of the Upaniṣads, and the text every Vedānta school had to comment on to exist.
Śruti — that which was heard
What apauruṣeya means, how the Veda was preserved syllable-perfect for millennia without writing, and why śrut…
Smṛti — that which was remembered
The vast human-authored body: Vedāṅga, Itihāsa, Purāṇa, Dharma Śāstra, Sūtra, Darśana, Āgama and Kāvya — deriv…
Nigama and Āgama — the two revealed streams
The Vedic and the Tantric revelations: their different forms, their different eligibility rules, why every tem…
The four Vedas
Ṛgveda, Yajurveda, Sāmaveda and Atharvaveda — what each contains, the priest each belongs to, its śākhās, and …
Ṛgveda
The oldest surviving text of the tradition: 1,028 hymns in ten maṇḍalas, its structure, its great hymns, and w…
Yajurveda
The Veda of the act: the formulae by which the sacrifice is performed, its white and black branches, and the U…
Last revised 2026-08-16. Corrections are welcome — see how this site is written.