瑜伽論記 18.80

18.80

三、辨五行。身行，謂入出息。語行，是尋伺意行謂想受等。四、業行者，業體之行。五、壽行者，由邊際定力轉壽令長名壽行，或云即命根體

Third, distinguishing the five activities (saṃskāras). Bodily activities are inhalation and exhalation. Verbal activities are investigation and reflection. Mental activities are ideation, sensation, and the like. Fourth, karmic activities are the activities of the substance of karma. Fifth, life activities: prolonging life through the power of edge-limit samādhi is called life activity; or it is said to be the substance of the life faculty itself.