sems klong man ngag gi sde gsum

སེམས་ཀློང་མན་ངག་གི་སྡེ་གསུམ
Mind, Space and Instruction Sections. After Garab Dorje established the six million four hundred thousand tantras of Dzogchen in the human world, his chief disciple, Manjushrimitra, arranged these tantras into three categories: the Mind Section emphasizing luminosity, the Space Section emphasizing emptiness, and the Instruction Section emphasizing their indivisibility [RY]