This audio references a text entitled རྒྱུད་བླ་མའི་འགྲེལ་པ།, written phonetically as gyü la mé drel pa. This work  references and comments on the Uttaratantra, one of the Five Treatises of Maitreya. This work focuses on the later scriptures of the Great Vehicle, Mahayana, and their sublime continuity.