大毘盧遮那成佛經疏 2.6

2.6

經云「人量」者，謂計神我之量等於人身，身小亦小、身大亦大。《智度》云「有計：神大小隨人身，死壞時神亦前出。」即與此同。然彼宗以我為常住自在之法；今既隨身大小，即是無常，故知不然也。

The sūtra says: “The measure of a human.” This refers to the imputation that the measure of the spiritual self is equal to the human body: when the body is small, it is also small; when the body is large, it is also large. The Mahāprajñāpāramitopadeśa says: “There are those who impute: the size of the spirit accords with the human body; at the time of death and destruction, the spirit also emerges first.” This is identical to that. However, that school considers the self to be a permanent, autonomous dharma; now, since it accords with the size of the body, it is impermanent, so one knows it is not so.