Beautiful, clear translations of every text necessary for one of the most important Buddhist tantric practices. This book is strictly intended for those who have completed the empowerment into the five deity mandala of Heruka Chakrasamvara of Mahasiddha Ghantapa, according to the lineage of Lama Tsongkhapa. The Source of Supreme Bliss contains the first English translations of important commentaries on the Highest Yoga Tantra system of the Heruka Chakrasamvara five deity practice. Included is a lucid, practical, and deeply profound explanation of the generation stage by Ngulchu Dharmabhadra. This is followed by an extremely rare and profound commentary by the First Panchen Lama Losang Chökyi Gyaltsen on the completion stage, along with a commentary on how to perform a proper Chakrasamvara retreat. The second half of the book comprises translations of the ritual texts associated with the commentaries. Indispensable for anyone who undertakes this practice, The Source of Supreme Bliss will also provide rich and profound insights for those interested in Highest Yoga Tantra. The Dechen Ling Practice Series from Wisdom Publications is committed to furthering the vision of David Gonsalez (Venerable Losang Tsering) and the Dechen Ling Press of bringing the sacred literature of Tibet to the West by making available many never-before-translated texts.