A translation from Tibetan of an eighteenth-century compilation by one of Tibet's greatest Buddhist masters of practice texts of the Marpa Kagyu lineage of Tibetan Buddhism. The Treasury of Precious Instructions by Jamgön Kongtrul Lodrö Taye, one of Tibet’s greatest Buddhist masters, is a shining jewel of Tibetan literature, presenting essential teachings from the entire spectrum of practice lineages that existed in Tibet. In its eighteen volumes, Kongtrul brings together some of the most important texts on key topics of Buddhist thought and practice as well as authoring significant new sections of his own. The seventh volume of the series, Marpa Kagyu, is the first of four volumes that present a selection of core instructions from the Marpa Kagyu lineage of Tibetan Buddhism. This lineage is named for the eleventh-century Tibetan Marpa Chökyi Lodrö of Lhodrak who traveled to India to study the sūtras and tantras with many scholar-siddhas, the foremost being Nāropa and Maitrīpa. The first part of this volume contains source texts on mahāmudrā and the six dharmas by such famous masters as Saraha and Tilopa. The second part begins with a collection of sādhanas and abhisekas related to the Root Cakrasamvara Aural Transmissions, which are the means for maturing, or empowering, students. It is followed by the liberating instructions, first from the Rechung Aural Transmission. This section on instructions continues in the following three Marpa Kagyu volumes. Also included are lineage charts and detailed notes by translator Elizabeth M. Callahan.