首楞嚴義疏注經 9.152

9.152

修妙觀智，滌內垢障，故云洗心。由魔引起分別念著，故名非正。陰魔等者，常說四魔：謂煩惱魔，生死因也；陰魔、死魔，生死果也；天魔，生死緣也。今云鬼神等，即天魔屬，若《涅槃》云「皆是先世犯初重禁，乃至餘篇而現者。」此則業因種子被激而生也。是故行人先須明擇。

Cultivating the wondrous wisdom of contemplation cleanses inner defilements and hindrances, hence called 'cleansing the mind.' Because demons induce discriminatory attachment, it is called 'not correct.' Regarding 'skandha-demons' and so forth: the four demons are commonly spoken of: defilement-demons are the cause of saṃsāra; skandha-demons and death-demons are the fruit of saṃsāra; heavenly demons are the condition for saṃsāra. Here, 'ghosts and spirits' and so on belong to the category of heavenly demons. As the Nirvāṇa Sūtra says: 'They all manifest because in former lives one violated the fundamental major prohibitions down to the other categories [of offenses].' These are karmic seeds stirred into arising. Therefore, practitioners must first clearly discern them.