成唯識論述記 6.436

6.436

述曰：若捨、不放逸唯出世道有，世間道心應非寂靜；以無捨故；如染等心。亦應不能防惡修善；無不放逸故；亦如染等心。既有寂靜等故，有捨、不放逸。又世間善心應不伏掉舉及伏放逸；無能治故；如染心等。既知世間道，准散善亦有。然有比量：散善等中應有此二；是善心故，具四法故；如出世道。

The Commentary states: If equanimity (upekṣā) and non-negligence (apramāda) existed only in the supramundane path, the mind of the mundane path should not be tranquil, because it would lack equanimity, just like defiled minds and so forth. It also should be incapable of preventing evil and cultivating the good, because it would lack non-negligence, also just like defiled minds and so forth. Since it does have tranquility and so forth, it has equanimity and non-negligence. Furthermore, the mundane wholesome mind should not subdue restlessness (auddhatya) or subdue negligence (pramāda), because it would lack that which remedies them, just like defiled minds and so forth. Since we know this is so for the mundane path, by analogy it also exists in distracted wholesome [minds]. Thus there is a formal inference: In distracted wholesome [minds] and so forth, these two ought to exist; because it is a wholesome mind, because it possesses the four dharmas; just like the supramundane path.