The Aitareya Upanishad is one of the older, "primary" Upanishads commented upon by Shankara. It is a Mukhya Upanishad, associated with the Rigveda. It figures as number 8 in the Muktika canon of 108 Upanishads.

The Aitareya Upanishad is a short prose text in three chapters. It comprises the 4-6 chapters of the second book of the older vedic text Aitareya Aranyaka.

In the first chapter of the text, atman, the inner self, is portrayed as a divine creator. In the second chapter, the three births of the atman are described.

The Aitareya Upanishad is one of the oldest of the Upanishads. It belongs to the Aitareya Aranyaka of the Rigveda. It is divided into three chapters and contains 33 verses. The Upanishad deals with the process of creation.

its a commentary on few aspects of the Rig veda by an individual, one must not take it as the absolute truth although it was analysed by one of great spiritual and intellectual minds of all time.

Upanishads