དབུགས་ཐུང་ངུ་ཕྱུང་ན་ཡང་དབུགས་ཐུང་ངུ་ཕྱུང་བར་རབ་ཏུ་ཤེས་སོ། །
Śāradvatī­putra, it is in such ways that great bodhisattva beings who are diligent, alert, and mindful, after eliminating worldly covetousness and sadness without apprehending anything, with regard to the inner body, continue to observe the physical body.
Emptiness, Bodhisattvas, Perfection of Wisdom