Bruhadharanyaka Upanishad

The Brihadaranyaka Upanishad is one of the Principal Upanishads and one of the oldest Upanishadic scriptures. The Sanskrit language text is contained within the Shatapatha Bramhana, which is itself a part of the Shukla Yajur Veda. The Brihadaranyaka Upanishad is a treatise on Ātman (Soul, Self), includes passages on metaphysics, ethics and a yearning for knowledge that influenced various Indian religions.