大毘盧遮那成佛經疏 2.10

2.10

經云「若識」者，謂有一類執此識遍一切處，乃至地水火風虛空界，識皆遍滿其中。此亦不然。若識神遍常，應獨能見聞覺知。而今要由根塵和合方有識生，則汝識神為無所用。又若識神遍五道中，云何復有死生耶？故知不爾也。

The sūtra says: “Or consciousness.” This refers to a class that clings to this consciousness as pervading all places, even up to the realms of earth, water, fire, wind, and space, with consciousness filling them completely. This too is not correct. If the conscious spirit were pervasive and eternal, it ought to be able to see, hear, sense, and know on its own. Yet now consciousness only arises through the combination of sense faculties and sense objects; thus your conscious spirit is useless. Furthermore, if the conscious spirit pervades the five destinies, how could there be death and birth? Therefore one knows it is not so.