In Tibetan Buddhism and Bön, Menngagde (Wylie: man ngag sde, Tib. མན་ངག་སྡེ; THDL phonetics: men-ngak-dé), (Sanskrit: upadeshavarga), is the name of one of three scriptural and lineage divisions within Dzogchen, (Skt. Atiyoga, Great Perfection) teachings. Dzogchen is itself the pinnacle of the ninefold division of practice according to the Nyingma school of Tibetan Buddhism. Menngagde focuses on the knowledge of trekchö and the basis (gzhi). Menngagde is also variously glossed as "Secret oral instruction division", "Secret oral instruction series," "Secret oral school", or "Quintessential Instructions Series", or "The Category of Direct Transmission".
Read more about Menngagde: Practice, Menngagde in The Dzogchen Textual Tradition, Distinguishing Features of The Menngagde (Oral Instruction Series), Four Divisions of Menngagde