The Mundaka Upanishad (Sanskrit: मुण्डक-उपनिषद्, Muṇḍaka Upaniṣad) is an ancient Sanskrit Vedic text, embedded inside Atharva Veda. It is a Mukhya (primary) Upanishad, and is listed as number 5 in the Muktika canon of 108 Upanishads of Hinduism. It is among the most widely translated Upanishads.
It is a poetic verse style Upanishad, with 64 verses, written in the form of mantras. However, these mantras are not used in rituals, rather they are used for teaching and meditation on spiritual knowledge.
The book contains the original Upanishad and the Bengali translation of Shankaracharya’s commentary on it with detailed notes.