Aitareya Upanishad

The Aitareya Upanishad (Sanskrit: ऐतरेय उपनिषद् IASTAitareyopaniṣad) is a Mukhya Upanishad, associated with the Rigveda. It comprises the fourth, fifth and sixth chapters of the second book of Aitareya Aranyaka, which is one of the four layers of Rig vedic text.[1]

One of the ancient Sanskrit scriptures of Hinduism


The Aitareya Upanishad, is found embedded inside the Rigveda. Above: a manuscript page (Sanskrit, Devanagari script)
Devanagari ऐतरेय
IAST Aitareyopaniṣad
Date pre-Buddhist,
~6th to 5th century BCE
Author(s) Aitareya Mahidasa
Type Mukhya Upanishad
Linked Veda Rigveda
Linked Brahmana part of Aitareya Brahmana
Linked Aranyaka Aitareya Aranyaka
Chapters three
Verses 33
Philosophy Ātman, Brahman
Commented by Adi Shankara, Madhvacharya
Popular verse “Prajñānam brahma”
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Aitareya Upanishad discusses three philosophical themes: first, that the world and man is the creation of the Atman (Universal Self); second, the theory that the Atman undergoes threefold birth; third, that Consciousness is the essence of Atman.[2]

. . . Aitareya Upanishad . . .

According to a 1998 review by Patrick Olivelle and other scholars, the Aitareya Upanishad was likely composed in a pre-Buddhist period, possibly 6th to 5th century BCE.[3][4]

Aitareya Upanishad is a primary ancient Upanishad, and is listed as number 8 in the Muktika canon of 108 Upanishads. Considered one of the middle Upanishads, the date of composition is not known but has been estimated by scholars to be sometime around 6th or 5th century BCE.[5]

The Aitareya Upanishad is a short prose text, divided into three chapters, containing 33 verses.[6]

In the first chapter of the Aitareya Upanishad, Atman is asserted to have existed alone prior to the creation of the universe. It is this Atman, the Self or the Inner Self, that is then portrayed as the creator of everything from itself and nothing, through heat. The text states that the Atman created the universe in stages. First came four entities: space, maram (earth, stars), maricih (light-atom) and apas (ur-water, cosmic fluid).[2] After these came into existence, came the cosmic self and eight psyches and principles (speech, in-breathing, sight, hearing, skin/hair, mind, out-breathing, reproductivity). Atman then created eight guardians corresponding to these psyches and principles.[2] Then, asserts Aitareya Upanishad, came the connective principles of hunger and thirst, where everything became interdependent on everything else through the principle of apana (digestion). Thereafter came man, who could not exist without a sense of Self and Atman. But this sense then began cogitating on itself, saying that “I am more than my sensory organs, I am more than my mind, I am more than my reproductive ability”, and then asked (abridged),


Who am I?

Aitareya Upanishad, Chapter 1, Hymn 11[2][7]

Paul Deussen summarizes the first chapter of Aitareya Upanishad as follows,

The world as a creation, the Man as the highest manifestation of the Atman who is also named as the Brahman – this is the basic idea of this section.

Paul Deussen, Aitareya Upanishad, Chapter 1[8]

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. . . Aitareya Upanishad . . .