The Kena Upanishad (Kenopaniṣat) is classified as one of the primary or Mukhya Upanishads that is embedded inside the last section of the  Talavakara Brahmanam of the Samaveda. Kena Upanishad is notable in its discussion of Brahman with attributes and without attributes, and for being a treatise on  “purely conceptual knowledge”. It asserts that the efficient cause of all the gods symbolically envisioned as forces of nature, is Brahman. This has made it a  foundational scripture to Vedanta school of Hinduism, both the theistic and monistic sub-schools after varying interpretations. The Kena Upanishad is also significant in asserting the idea of “Spiritual Man”, “Soul is a wonderful being that even gods worship”, “Atman (Soul) exists”, and “knowledge and spirituality are the goals and intense longing of all creatures”.