།དེ་ལ་ཕ་རོལ་ཏུ་འགྲོ་བ་དག་གི་གཟིངས་གང་ཞེ་ན།
Because it is the meditation on impermanence, suffering, and emptiness by those who have the higher motivation of desiring to attain nirvāṇa.
Light, Reality, Assembly