27  Pramanas: Pratyaksha (Perception), Anumana (Inference), Upamana (Comparison), Shabda (Verbal testimony), Arthapatti (Implication) and Anupalabdhi (Non-apprehension)

27.1 What the Syllabus Covers

The syllabus names six pramāṇas, accepted in full by the Bhāṭṭa Mīmāṃsā (Kumārila) and Advaita Vedānta (Śaṅkara) schools. This sub-unit goes into the internal sub-classifications of each pramāṇa — most heavily for Pratyakṣa and Anumāna, since PYQs reliably ask candidates to (a) name a sub-type, (b) define a Sanskrit term, and (c) match a worked example to the correct pramāṇa.

27.2 Pramāṇa Overview

TipThe Six Pramāṇas at a Glance
# Sanskrit Translation Karmic / instrument
1 Pratyakṣa Perception Sense-organ + object
2 Anumāna Inference Sign (linga) + invariable concomitance (vyāpti)
3 Upamāna Comparison Resemblance to a known thing
4 Śabda Verbal testimony Word of a trustworthy person (āpta)
5 Arthāpatti Postulation An unstated cause required to explain a known fact
6 Anupalabdhi Non-apprehension Absence of perception about a perceivable object

27.3 Pratyakṣa — Perception

Pratyakṣa is aindriyaka jñāna — knowledge produced by the contact of a sense organ with its object.

27.3.1 Definition

Gautama’s Nyāya Sūtra (1.1.4): Indriyārtha-sannikarṣa-utpannaṁ jñānam avyapadeśyam avyabhicāri vyavasāyātmakaṁ pratyakṣam — “Perception is the knowledge which arises from the contact of a sense organ with its object, is non-verbal, non-erroneous, and definite in character.”

TipThree Conditions in the Definition
  • Non-verbal (avyapadeśya) — not expressed in words at the moment of cognition.
  • Non-erroneous (avyabhicāri) — not a misperception.
  • Definite (vyavasāyātmaka) — not a doubt or vague impression.

27.3.2 Classification of Pratyakṣa

TipTwo Stages of Perception
Stage Sanskrit Description
Indeterminate Nirvikalpa Bare, pre-conceptual awareness — “this”
Determinate Savikalpa Conceptualised, judgmental — “this is a tree”

27.3.3 By Channel — Six Senses

In Indian thought, mind (manas) is the sixth internal sense, in addition to the five external senses (eye, ear, nose, tongue, skin). Perception through manas gives inner cognitions like pleasure, pain, desire.

27.3.4 Ordinary vs Extraordinary Perception

TipLaukika vs Alaukika Pratyakṣa
  • Laukika — ordinary perception via direct sense-object contact.
  • Alaukika — extraordinary perception, of three kinds:
    • Sāmānyalakṣaṇa — perception of universals (e.g., seeing “cowness” when seeing a cow).
    • Jñānalakṣaṇa — perception based on a previous cognition (e.g., “the sandalwood is fragrant” — sight + memory of smell).
    • Yogaja — yogic perception by trained adepts.

27.3.5 Stages of the Perceptual Process (Nyāya)

TipFour-step Perceptual Process

Object → Sense-organ contact → Internal sense (manas) → Self (ātman) — only when all four elements connect does cognition arise.

27.4 Anumāna — Inference

Anumāna is knowledge of an object through a perceived sign (liṅga) and the knowledge of the invariable concomitance (vyāpti) between the sign and the thing inferred.

27.4.1 The Classical Example — Smoke and Fire

TipThe Famous Example

“There is fire on the hill, because there is smoke. Wherever there is smoke, there is fire — as in the kitchen.”

  • Pakṣa (subject / locus): hill.
  • Sādhya (predicate / thing to be proved): fire.
  • Hetu / Liṅga (reason / sign): smoke.
  • Vyāpti (invariable concomitance): wherever smoke, there fire.
  • Dṛṣṭānta (example): the kitchen.

(Detailed structure of inference, vyāpti, and hetvābhāsa is the subject of Topic 27.)

27.4.2 Two Major Classifications

TipTwo Classifications of Anumāna
  • Svārtha vs Parārtha — inference for oneself vs for others.
  • Pūrvavat / Śeṣavat / Sāmānyatodṛṣṭa (Nyāya): from cause to effect (cloud → rain); from effect to cause (river in flood → upstream rain); analogically across categories (movement of planets inferred from observation).

27.4.3 Buddhist Three Kinds (Dharmakīrti)

TipDharmakīrti’s Three Hetus
  • Kārya-hetu — causal sign (effect → cause).
  • Svabhāva-hetu — natural-relation sign (essential property).
  • Anupalabdhi-hetu — non-apprehension as sign.

27.5 Upamāna — Comparison

Upamāna is knowledge of a new thing through its similarity to a thing already known.

27.5.1 The Classical Example — The Gavaya

TipThe Gavaya (Wild Bison) Example

A villager hears from a forester: “A gavaya is like a cow.” Walking in the forest, the villager sees an animal resembling a cow and recognises: “This is a gavaya.”

The knowledge that “this kind of animal is what is called a gavaya” arises through similarity-based recognition. This naming-by-similarity is upamāna.

27.5.2 Schools and Upamāna

Nyāya treats upamāna as a distinct pramāṇa. Vaiśeṣika subsumes it under inference. Buddhists reject it as independent. Mīmāṃsā treats it as a means of naming an unfamiliar thing.

27.6 Śabda — Verbal Testimony

Śabda (or āpta-vacana) is knowledge from the trustworthy word of an āpta — a person who has direct knowledge of the matter and has no motive to deceive.

27.6.1 Two Categories

TipTwo Categories of Śabda
Category Sanskrit Source
Sensible Dṛṣṭārtha Knowledge about perceivable matter, e.g., “Delhi is the capital of India”
Supersensible Adṛṣṭārtha Knowledge about matters beyond the senses (Vedas, dharma, moksha)

27.6.2 Conditions for Valid Testimony

TipFour Conditions
  1. Āpta — speaker is a knower with no motive to deceive.
  2. Ākāṅkṣā — syntactic expectancy — words depend on other words in sentence.
  3. Yogyatā — semantic fitness — meanings can combine.
  4. Sannidhi — proximity — words spoken without long pause.

27.6.3 Śabda Across Schools

TipŚabda in Different Schools
  • Nyāya — accepts śabda as a distinct pramāṇa; āpta includes scriptures and wise persons.
  • Mīmāṃsā — Vedas (śabda) are apauruṣeya (authorless, eternal).
  • Sāṃkhya and Yoga — accept śabda but distinguish vedic from non-vedic.
  • Vaiśeṣika and Buddhists — reject śabda as independent (subsume under anumāna).
  • Cārvāka — rejects śabda entirely.

27.7 Arthāpatti — Postulation / Presumption

Arthāpatti is the postulation of an unstated fact that is necessary to explain or reconcile a perceived fact. It is the Indian counterpart to “inference to the best explanation”.

27.7.1 The Two Classical Examples

TipTwo Famous Examples
  • “Fat Devadatta does not eat by day.” Yet Devadatta is fat. The only way to reconcile: he must eat at night.
  • The “alive but not at home” case. The man is alive (known). But he is not in his house (perceived). The only way to reconcile: he is somewhere outside.

27.7.2 Two Kinds

TipTwo Kinds of Arthāpatti
  • Dṛṣṭa-arthāpatti — postulation from a perceived fact.
  • Śrutārthāpatti — postulation from a heard / asserted fact.

27.7.3 Arthāpatti Across Schools

TipArthāpatti Across Schools
  • Prābhākara and Bhāṭṭa Mīmāṃsā, Advaita Vedānta accept it as an independent pramāṇa.
  • Nyāya, Vaiśeṣika, Buddhists subsume it under anumāna (inference).

27.8 Anupalabdhi — Non-Apprehension

Anupalabdhi is knowledge of the absence of an object through the absence of its perception when it would have been perceived if present.

27.8.1 The Classical Example

TipThe Empty Floor Example

You walk into a room and do not see a chair. You conclude: “There is no chair in this room.” The knowledge of absence arises directly through non-perception.

27.8.2 Four Conditions for Valid Anupalabdhi

TipFour Conditions
  1. The object must be perceivable in principle.
  2. The conditions of perception must be present (light, no obstruction).
  3. The competent perceiver must be present and attentive.
  4. The object is not perceived.

27.8.3 Anupalabdhi Across Schools

TipAnupalabdhi Across Schools
  • Kumārila Bhaṭṭa (Bhāṭṭa Mīmāṃsā) — distinctively accepts it as the 6th pramāṇa.
  • Advaita Vedānta (Śaṅkara) — accepts it.
  • Nyāya, Vaiśeṣika, Sāṃkhya, Buddhists — subsume under inference or perception.

27.9 Three Less-Tested Pramāṇas (Brief Note)

Some traditions recognise additional pramāṇas, though these are rarely tested:

TipAdditional Pramāṇas
  • Sambhava — inclusion / probability. “Whoever knows a hundred knows fifty.” Accepted by Pauranic tradition.
  • Aitihya — tradition / hearsay. Accepted by some Pauranic schools.
  • Pratibhā — intuition. Some Mīmāṃsā schools.
  • Ceṣṭā — gesture. Used in some interpretive contexts.

27.10 Comprehensive Comparison Table

TipAll Six Pramāṇas — One-Line Distinctions
Pramāṇa Locus Necessary input Closest Western parallel
Pratyakṣa Sense-object contact Working senses + present object Sense perception
Anumāna Linga (sign) Vyāpti + observed sign Deductive/inductive inference
Upamāna Similarity Known sample + new instance Analogy
Śabda Trustworthy speaker Āpta + valid sentence Testimony, authority
Arthāpatti An unexplained fact A known fact requiring explanation Inference to best explanation
Anupalabdhi Absence of perception Conditions for perception are met but object not perceived Direct knowledge of absence 

flowchart TB
  P{Sources of<br/>Valid Knowledge} --> PR[Pratyakṣa<br/>Perception<br/>indriya-sannikarṣa]
  P --> AN[Anumāna<br/>Inference<br/>via liṅga + vyāpti]
  P --> UP[Upamāna<br/>Comparison<br/>via similarity]
  P --> SH[Śabda<br/>Testimony<br/>via āpta-vacana]
  P --> AR[Arthāpatti<br/>Postulation<br/>required explanation]
  P --> ANP[Anupalabdhi<br/>Non-apprehension<br/>absence as cognition]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

27.11 Theory Anchors

TipPersons, Texts, and Concepts
Person Period Contribution
Gautama (Akṣapāda) ~2nd c. CE Nyāya Sūtras; canonical 4-pramāṇa list
Vātsyāyana ~5th c. CE Nyāya Bhāṣya — commentary on Gautama
Kaṇāda ancient Vaiśeṣika; perception + inference
Dignāga 5–6th c. CE Buddhist Pramāṇa-samuccaya; nirvikalpa pratyakṣa
Dharmakīrti 7th c. CE Pramāṇa-vārttika; three hetus
Kumārila Bhaṭṭa 7–8th c. CE Bhāṭṭa Mīmāṃsā; Anupalabdhi
Prabhākara Miśra 7–8th c. CE Prābhākara Mīmāṃsā; Arthāpatti
Śaṅkara ~800 CE Advaita Vedānta; all six pramāṇas
Annaṃbhaṭṭa 17th c. Tarka-saṅgraha — Nyāya manual

27.12 Practice Questions

Q 01 List Easy

The six classical pramāṇas, in their conventional order, are:

  • APratyakṣa, Anumāna, Upamāna, Śabda, Arthāpatti, Anupalabdhi
  • BŚabda, Upamāna, Anumāna, Pratyakṣa, Anupalabdhi, Arthāpatti
  • CAnumāna, Pratyakṣa, Śabda, Upamāna, Arthāpatti, Anupalabdhi
  • DPratyakṣa, Arthāpatti, Anumāna, Śabda, Upamāna, Anupalabdhi
View solution
Correct Option: A
Conventional order: Pratyakṣa, Anumāna, Upamāna, Śabda, Arthāpatti, Anupalabdhi.
Q 02 Pratyakṣa Medium

In Indian logic, the bare, pre-conceptual stage of perception is called:

  • ASavikalpa
  • BNirvikalpa
  • CLaukika
  • DAlaukika
View solution
Correct Option: B
Nirvikalpa = indeterminate (bare). Savikalpa = determinate (conceptual).
Q 03 Pratyakṣa Hard

"Sāmānyalakṣaṇa pratyakṣa" — extraordinary perception of universals — falls under which category?

  • ALaukika perception
  • BAlaukika perception
  • CAnumāna
  • DAnupalabdhi
View solution
Correct Option: B
Alaukika (extraordinary) perception has 3 sub-types: sāmānyalakṣaṇa (universals), jñānalakṣaṇa (from prior cognition), yogaja (yogic).
Q 04 Anumāna Medium

In the classical inference "There is fire on the hill, because there is smoke", the smoke is the:

  • APakṣa
  • BSādhya
  • CHetu / Liṅga
  • DDṛṣṭānta
View solution
Correct Option: C
Hill = pakṣa (subject); fire = sādhya (thing to be proved); smoke = hetu / liṅga; kitchen = dṛṣṭānta (example).
Q 05 Anumāna Hard

The invariable concomitance between hetu and sādhya is called:

  • APakṣa
  • BVyāpti
  • CPratijñā
  • DNigamana
View solution
Correct Option: B
Vyāpti = invariable concomitance ("wherever smoke, there fire").
Q 06 Anumāna Medium

Inference "for oneself" is called:

  • ASvārtha anumāna
  • BParārtha anumāna
  • CPūrvavat anumāna
  • DŚeṣavat anumāna
View solution
Correct Option: A
Svārtha = for oneself; parārtha = for others (requires 5-step demonstration).
Q 07 Upamāna Medium

The classical example of Upamāna in Indian logic involves recognising a:

  • AGavaya (wild ox)
  • BFish
  • CHorse
  • DSnake
View solution
Correct Option: A
The villager hears "a gavaya is like a cow", then recognises a gavaya in the forest by similarity.
Q 08 Śabda Medium

An "āpta" in śabda-pramāṇa is:

  • AAny speaker
  • BA trustworthy person with direct knowledge and no motive to deceive
  • CA divinity only
  • DAnyone who has written a book
View solution
Correct Option: B
Āpta = trustworthy/competent witness with no motive to deceive. Source of valid testimony.
Q 09 Śabda Conditions Hard

Which of the following is NOT one of the four conditions for valid verbal testimony?

  • AĀkāṅkṣā
  • BYogyatā
  • CSannidhi
  • DPratijñā
View solution
Correct Option: D
Four conditions of valid śabda: Āpta · Ākāṅkṣā (expectancy) · Yogyatā (fitness) · Sannidhi (proximity). Pratijñā is the first step of Nyāya syllogism, unrelated.
Q 10 Arthāpatti Medium

"Fat Devadatta does not eat during the day. Therefore he must eat at night." This illustrates which pramāṇa?

  • AAnumāna
  • BUpamāna
  • CArthāpatti
  • DAnupalabdhi
View solution
Correct Option: C
Postulating an unstated cause (night-eating) to reconcile two facts (fatness + no day-eating) = Arthāpatti.
Q 11 Arthāpatti Hard

Arthāpatti is independently recognised as a pramāṇa by:

  • ANyāya only
  • BVaiśeṣika only
  • CMīmāṃsā and Advaita Vedānta
  • DCārvāka
View solution
Correct Option: C
Prābhākara and Bhāṭṭa Mīmāṃsā + Advaita Vedānta recognise Arthāpatti as independent. Nyāya and Vaiśeṣika subsume it under inference.
Q 12 Anupalabdhi Medium

"There is no chair in this room" — knowledge of absence by non-perception — uses:

  • APratyakṣa
  • BAnumāna
  • CAnupalabdhi
  • DArthāpatti
View solution
Correct Option: C
Cognition of absence through non-perception = Anupalabdhi.
Q 13 Anupalabdhi Hard

The sixth pramāṇa "Anupalabdhi" was added by:

  • APrabhākara
  • BKumārila Bhaṭṭa
  • CGautama
  • DDignāga
View solution
Correct Option: B
Kumārila Bhaṭṭa of the Bhāṭṭa Mīmāṃsā — distinctively adds Anupalabdhi.
Q 14 Hetu Type Hard

Dharmakīrti's three types of hetu in Buddhist logic are:

  • AKārya, Svabhāva, Anupalabdhi
  • BPakṣa, Sādhya, Hetu
  • CSvārtha, Parārtha, Sambandha
  • DPūrvavat, Śeṣavat, Sāmānyatodṛṣṭa
View solution
Correct Option: A
Dharmakīrti: Kārya-hetu (causal), Svabhāva-hetu (natural-property), Anupalabdhi-hetu (non-apprehension).
Q 15 Pratyakṣa Hard

Yogic perception (yogaja pratyakṣa) falls under:

  • ALaukika
  • BAlaukika
  • CAnumāna
  • DAnupalabdhi
View solution
Correct Option: B
Yogaja = one of the 3 alaukika (extraordinary) types, alongside sāmānyalakṣaṇa and jñānalakṣaṇa.
Q 16 Śabda Type Medium

Testimony about matters beyond the senses (e.g., dharma, moksha) is called:

  • ADṛṣṭārtha
  • BAdṛṣṭārtha
  • CPratyakṣa-śabda
  • DAnumāna-śabda
View solution
Correct Option: B
Adṛṣṭārtha = supersensible matter. Dṛṣṭārtha = perceivable matter.
Q 17 Definition Hard

In Gautama's definition of perception, "avyabhicāri" means:

  • ADefinite
  • BNon-verbal
  • CNon-erroneous
  • DFrom sense contact
View solution
Correct Option: C
avyabhicāri = non-erroneous. avyapadeśya = non-verbal; vyavasāyātmaka = definite.
Q 18 Vyāpti Medium

In Anumāna, "wherever there is smoke, there is fire" is the statement of:

  • ASādhya
  • BVyāpti
  • CPakṣa
  • DNigamana
View solution
Correct Option: B
Vyāpti = invariable concomitance. Without vyāpti there is no valid inference.
Q 19 Identify Medium

"India's capital is New Delhi" — knowledge from a reliable source — illustrates:

  • APratyakṣa
  • BAnumāna
  • CŚabda
  • DArthāpatti
View solution
Correct Option: C
Knowledge from a competent verbal source = Śabda.
Q 20 Match Hard

Match each pramāṇa with its closest Western parallel:

(i) Anumāna (a) Authority / Testimony
(ii) Arthāpatti (b) Analogy
(iii) Upamāna (c) Inference
(iv) Śabda (d) Inference to best explanation
  • A(i)-c, (ii)-d, (iii)-b, (iv)-a
  • B(i)-a, (ii)-b, (iii)-c, (iv)-d
  • C(i)-d, (ii)-c, (iii)-a, (iv)-b
  • D(i)-b, (ii)-c, (iii)-d, (iv)-a
View solution
Correct Option: A
Anumāna → Inference; Arthāpatti → Inference to best explanation; Upamāna → Analogy; Śabda → Testimony / Authority.

27.13 Quick Recall

ImportantQuick recall
  • Six pramāṇas in order: Pratyakṣa · Anumāna · Upamāna · Śabda · Arthāpatti · Anupalabdhi.

Pratyakṣa (Perception) - Gautama: produced from sense-object contact; non-verbal · non-erroneous · definite. - Nirvikalpa (indeterminate) vs Savikalpa (determinate). - 5 external senses + manas (internal sense) = 6. - Laukika (ordinary) vs Alaukika (extraordinary). - Alaukika 3 types: Sāmānyalakṣaṇa (universals) · Jñānalakṣaṇa (from prior cognition) · Yogaja (yogic).

Anumāna (Inference) - Smoke-on-the-hill example. Pakṣa (subject) · Sādhya (predicate) · Hetu/Liṅga (sign) · Vyāpti (invariable concomitance) · Dṛṣṭānta (example). - Svārtha (for self) vs Parārtha (for others). - Nyāya 3 types: Pūrvavat (cause→effect) · Śeṣavat (effect→cause) · Sāmānyatodṛṣṭa (analogical). - Dharmakīrti 3 hetus: Kārya · Svabhāva · Anupalabdhi.

Upamāna (Comparison) - Gavaya (wild bison) example. - Naming-by-similarity. - Accepted as distinct by Nyāya, Mīmāṃsā; subsumed by Vaiśeṣika under inference.

Śabda (Verbal Testimony) - Āpta-vacana — word of a trustworthy person. - Dṛṣṭārtha (perceivable) vs Adṛṣṭārtha (supersensible). - 4 conditions of valid sentence: Āpta · Ākāṅkṣā (expectancy) · Yogyatā (fitness) · Sannidhi (proximity). - Vedas as apauruṣeya (Mīmāṃsā).

Arthāpatti (Postulation) - “Fat Devadatta does not eat by day” → must eat at night. - Dṛṣṭa vs Śruta arthāpatti. - Recognised by Mīmāṃsā + Advaita Vedānta.

Anupalabdhi (Non-apprehension) - “No chair in the room” by not-seeing. - 4 conditions: object perceivable · conditions for perception present · attentive perceiver · no perception. - Added by Kumārila Bhaṭṭa (Bhāṭṭa Mīmāṃsā) and accepted by Advaita Vedānta.

Less-tested: Sambhava (inclusion) · Aitihya (tradition) · Pratibhā (intuition) · Ceṣṭā (gesture).