In this Upanishad, the sage Yajnavalkya narrated the expansion and contraction of the Universe and its formation from the Universal Consciousness and the mysteries of Ashvamedha yajna. This is written in Bengali (Bangla fonts) with the original texts and meaning.This Upanishad explains the mysteries behind 'ashvamedha yajna'. This is based on the unification of the divinity and mortality as seen by the seers.