Adhyatma Upanishad: From: Yajurveda (Shukla)

Adhyatma Upanishad is classified as a Samanya (non-sectarian) Upanishad. It is also known as Ṭurīyāṭīṭa Avaḍhūṭa Upanishaḍ. This Upanishad expounds on the nature of Brahman.