Aitareya Upanishad is one of the oldest and most revered Vedic Upanishads, with its roots dating back to the Vedic period (1500 BCE - 500 BCE).

• The Aitareya Upanishad is a part of the Rigveda, one of the oldest Hindu scriptures.
• The Upanishad is attributed to Aitareya Rishi, a sage who is said to have been the son of a sage named Narada.
• The Aitareya Upanishad contains 57 suktas (hymns), which are considered to be some of the most sacred and revered in Hinduism.
• The Upanishad is known for its emphasis on the concept of Atman (the individual self) and Brahman (the ultimate reality).
• The Aitareya Upanishad also explores the concept of karma and the cycle of birth and death.
• The Upanishad is considered to be one of the most difficult Upanishads to understand, due to its complex and nuanced teachings.

The Aitareya Upanishad is a rich source of spiritual guidance and wisdom, offering insights into the nature of reality and the human condition.