Mahamudra - or the Great Seal - refers to a Mahayana Buddhist system of meditation on the nature of the mind and is undertaken for realising enlightenment.
This text - by the Ninth Karmapa (1556-1603) - is one of the most famous expositions of this meditational system. It covers both the preliminary practices as well as the actual Mahamudra meditations of mental quiescence (shamatha) and penetrative insight (vipasyana).
Accompanying the root text is a commentary given orally by Beru Khyentze Rinpoche, based on the teachings of his guru - His Holiness the Sixteenth Karmapa.
As a proper relation with a Guru is essential for realising Mahamudra, also included is the basic text on Guru devotion by the first century B.C. Indian master Asvaghosa with an oral commentary by Geshe Ngawang Dhargyey.
This work is published under the auspices of the Library of Tibetan Works and Archives in a programme to make available living teachings from the many traditions of Buddhism as preserved in Tibet.