The Aitareya Upanishad belongs to the Rig Veda and supplies its Mahavakya — prajnanam brahma, consciousness is Brahman. It gets there in three short chapters by an unusual route: a creation account in which the Self makes the worlds, then the guardians of the senses, and then has to make somewhere for them to live — rejecting a cow and a horse before arriving at the human form and saying, in effect, well done. It then defines a person's three births, only one of which is the ordinary one.
🧠 Aitareya at a Glance
Veda: Rig — the Aitareya Aranyaka
Named for: Mahidasa Aitareya
Extent: 3 chapters
Mahavakya: prajñānam brahma — consciousness is Brahman (3.3)
Also gives: the creation of the purusha · the deities entering the
body · the doctrine of three births
📑 Table of Contents
🌌 In the Beginning, the Self Alone
ātmā vā idam eka evāgra āsīt — the Self alone was all this in the beginning. There was nothing else whatsoever that winked. He thought: let me create the worlds.
He creates four worlds, then draws a purusha — a person — out of the waters and shapes him. As the parts of that form are heated open, the faculties emerge and each produces its presiding deity:
| From | Comes | And from that |
|---|---|---|
| The mouth | Speech | Agni |
| The nostrils | Breath | Vayu |
| The eyes | Sight | Aditya, the sun |
| The ears | Hearing | The directions |
| The skin | Hair | The herbs and trees |
| The heart | Mind | The moon |
| The navel | Apana | Death |
The deities, having been created, fall into the great ocean and are afflicted by hunger and thirst. They ask for a dwelling in which they may eat.
He brings them a cow. Not enough, they say. He brings a horse. Not enough. He brings a human being — and they say sukṛitaṁ bata: well done!
Each deity then enters the body by its own gate — Agni becoming speech and entering the mouth, Vayu becoming breath and entering the nostrils, and so on. And the Self, having made the dwelling, considers how to enter it himself — and does so by splitting the crown of the head, at the point the text calls the vidriti, the suture.
👶 The Three Births
The second chapter defines a person as being born three times, and only one of them is what is ordinarily meant by birth.
| Birth | What the text says |
|---|---|
| First | The child conceived and carried, and brought forth. This is the first birth of the self — the text describes it as the man's own self going forth into the woman, and being borne by her. |
| Second | The son himself. The father, having nourished him, sets him in his place to continue the work — and the text says this is the father's second birth, the son being the father's self. |
| Third | After death, the birth that follows departure. |
The chapter then cites Vamadeva, who is said to have declared while still in the womb that he had known all the births of the gods — and who, on breaking out, ascended.
📌 What the three-birth doctrine is doing
It makes continuity — through a child, and through what one passes on — a form of the self's own birth rather than a substitute for it. The son is not a consolation for mortality; he is described as the father's self, born a second time. It is a strikingly concrete answer to the question the Upanishads usually treat abstractly.
🧠 Prajnanam Brahma
The third chapter opens by asking the question the whole Upanishad has been circling:
Who is this Self we worship? Which is the Self? Is it that by which one sees? By which one hears? By which odours are perceived, speech articulated, tastes distinguished?
The answer is that all of these are names of consciousness. The text then gives a long list of terms — perception, direction, understanding, comprehension, wisdom, insight, steadfastness, thought, thoughtfulness, impulse, memory, purpose, will, desire, longing — and says that all of them are names of prajnana.
प्रज्ञानं ब्रह्म ॥
prajñānam brahma — Consciousness is Brahman.
💡 Why the list comes first
The Upanishad does not simply assert the identity. It first enumerates every faculty a person might point to as “what I am” — seeing, hearing, remembering, wanting, deciding — and establishes that each is a name of the same thing. Only then does it say that this thing is Brahman. The Mahavakya is the conclusion of an argument, not an announcement.
❓ Frequently Asked Questions
What is the Mahavakya of the Aitareya Upanishad?
Prajnanam Brahma — consciousness is Brahman — at 3.3, the Mahavakya of the Rig Veda. It is the conclusion of an argument, not an announcement: the text first asks which faculty the Self is, lists perception, understanding, memory, purpose, will and desire, establishes that all are names of prajnana — and only then identifies it with Brahman.
What is the creation account in the Aitareya Upanishad?
It opens with ātmā vā idam eka evāgra āsīt — the Self alone was all this in the beginning, nothing else whatsoever that winked. He creates four worlds, draws a purusha from the waters, and as it is heated open the faculties emerge with their deities: speech and Agni from the mouth, breath and Vayu from the nostrils, sight and the sun from the eyes, and so on.
Why did the deities reject the cow and the horse?
Because they were not adequate dwellings. Afflicted by hunger and thirst, the deities asked for somewhere to live. The Self brought a cow — not enough. A horse — not enough. Then a human being, and they said sukṛitaṁ bata — well done! Each then entered by its own gate.
What are the three births in the Aitareya Upanishad?
First: the ordinary birth — described as the man's own self going forth and being borne. Second: the son himself — the father, having nourished him, sets him in his place, and the text calls this the father's second birth, the son being the father's self. Third: the birth after death. Continuity is made a form of the self's own birth, not a substitute for it.
What is the vidriti?
The suture at the crown of the head, which the Upanishad says the Self split in order to enter the body he had made. It lies behind the later identification of the brahmarandhra as the point of the Self's entry and exit. The Aitareya states the entry; the elaborate later physiology is a development and should be attributed as such.
🙏 Conclusion
The Aitareya reaches its Mahavakya by an unusually physical route. The Self makes the worlds, draws a person out of the water, opens him up so the faculties can emerge with their gods attached, and then has to house those gods — trying a cow and a horse before the human form gets the response well done. It defines a man as born three times, one of them being his own son. And only then, having listed every faculty a person might mistake for themselves, does it say that all of them are names of one thing and that the thing is Brahman.