དེ་བསམ་གཏན་དང་པོ་ལ་སྙོམས་པར་འཇུག་སྟེ། དེ་ལ་ཡང་མི་གནས་སོ། །
If you ask why, it is because [the first] meditative concentration is empty of its essential nature, while those who become absorbed in it are also empty, and the aspects [of it] through which they [become absorbed] are also empty.
Meditative absorption, non-apprehension, perfection