成唯識論述記 1.153

1.153

述曰：若無自證，二定不生，如無頭時，角定非有，及無鏡時，面影不起。皆於識上現相貌故，故說二分依識體生。此總顯示依他起性，此上顯示識之所變。

The Commentary states: If there were no self-verification, the two would definitely not arise, just as when there is no head, horns definitely do not exist, and when there is no mirror, the reflection of a face does not arise. Because both manifest their aspects upon consciousness, the two divisions are said to arise depending on the substance of consciousness. This comprehensively demonstrates the dependent nature; the above demonstrates that which is transformed by consciousness.