The concept of Panchakosh, representing the five layers or sheaths of the self, is a significant doctrine primarily found in the philosophical teachings of Vedanta.
These five sheaths are described as follows:
The detailed exploration and origin of the Panchakosh concept are explicitly mentioned in the Taittriyopnishada, a prominent Upanishad.
While other texts listed, such as Yogasutra, Gherandasamhita, and Shrimad Bhagvad Gita, deal with related spiritual and philosophical concepts, the specific framework and detailed explanation of the Panchakosh belong to the Taittriyopnishada.