成唯識論掌中樞要 2.178

2.178

問：何故悶、睡俱引無心？問：即有觸塵之體，睡不爾耶？睡有睡心所，悶即無耶？有心悶時，此悶何也？由悶觸增引生悶位，不同睡數引別位生故，無悶心所也。睡何故非觸塵？能引心所即是睡數，能引悶觸即是心悶故，所以無也。悶或惛沈無堪任故。或悶即依五蘊上假立，如生無色生死悶數，即本識相應六數也。

Question: Why do both stupor and sleep induce the absence of mind? Question: If there is an entity of tactile dust, is sleep not so? Sleep has the mental factor of sleep; does stupor then lack one? When there is stupor with mind, what is this stupor? It is because the tactile [condition] of stupor intensifies, inducing the state of stupor; unlike the mental factor of sleep which induces the arising of a distinct state, there is no mental factor of stupor. Why is sleep not a tactile dust? The mental factor capable of inducing it is itself the sleep factor, whereas the tactile [condition] capable of inducing stupor is just mental stupor; hence there is none. Alternatively, stupor is dullness lacking functional capacity. Or else stupor is merely designated nominally upon the five aggregates, like the stupor-factor of death and rebirth when born into the formless realm, which is just the six mental factors associated with the root consciousness.