Taittiriya Upanishad
The Taittiriya Upanishad (Devanagari: तैत्तिरीय उपनिषद्) is a Vedic era Sanskrit text, embedded as three chapters (adhyāya) of the Yajurveda. It is a Mukhya (primary, principal) Upanishad, and likely composed about 6th century BCE.
The Taittiriya Upanishad is associated with the Taittiriya school of the Yajurveda, attributed to the pupils of sage Tittiri (literally, partridge birds). It lists as number 7 in the Muktika canon of 108 Upanishads.
The Taittiriya Upanishad is the seventh, eighth and ninth chapters of Taittiriya Aranyaka, which are also called, respectively, the Siksha Valli, the Ananda Valli and the Bhrigu Valli. This Upanishad is classified as part of the "black" Yajurveda, with the term "black" implying "the un-arranged, motley collection" of verses in Yajurveda, in contrast to the "white" (well arranged) Yajurveda where Brihadaranyaka Upanishad and Isha Upanishad are embedded.
The Upanishad includes verses that are partly prayers and benedictions, partly instruction on phonetics and praxis, partly advice on ethics and morals given to graduating students from ancient Vedic gurukul (schools), partly a treatise on allegory, and partly philosophical instruction.
