俱舍論疏 13.50

13.50

論「故無有因至定無行動」，論主結歸自宗。滅不待客因，是壞法性故。纔生即滅，故有剎那。既剎那滅，故無行動。

On the Śāstra's: "Therefore there is no cause ... definitely there is no movement": The author of the Śāstra concludes by returning to his own tenets. Cessation does not depend on an adventitious cause, because it is the nature of phenomena to perish. Ceasing immediately upon arising, moments therefore exist. Since there is momentary cessation, movement definitely does not exist.