大方廣圓覺修多羅了義經略疏 2.1277

2.1277

初則宴坐照見，後則行住皆知。知即無患，譬如妖魅所欲著人，若知其名，自然消滅。《涅槃》云：「如人覺知是賊，賊無能為。」

Initially one illuminates and perceives them in quiet sitting; later one knows them in all walking and standing. If one knows them, there is no harm, just as when a demonic spirit desires to possess a person, if its name is known, it naturally vanishes. The Nirvāṇa [Sūtra] says: 'Just as when a person realizes that it is a thief, the thief is unable to do anything.'