Dhyanabindhu Upanishad

It is one of twenty Yoga Upanishads in the four Vedas. The manuscripts of this Upanishad exist in two versions. The short version has 23 verses and is attached to the Atharvaveda, while the longer version has 106 verses and is attached to the Samaveda. The text is also called Dhyāna-bindūpanishad. The Upanishad discusses meditation in Yoga. It states that silence during meditation is a reminder of the infinite subtlety therein. It asserts there is an Atman (soul) in every living being, and that a Yogi must seek to understand both the part as well as the whole of everything. The longer version includes techniques for six-staged Yoga.