大方廣圓覺修多羅了義經略疏 2.439

2.439

躡前標解也。心性是識，識與根、塵三和合有，各無自性，但是無明迷真而起，故名幻化。

This takes up the preceding to indicate understanding. The nature of the mind is consciousness; consciousness exists in combination with the faculties and objects, each lacking self-nature, merely arising from avidyā confusing the real, hence termed 'illusion'.