成唯識論述記 9.614

9.614

述曰：第三師說「二分俱有」。七十三說「思惟」，明有見分，似真如相，不見真實真如性故，成有相分，如彼四句廣說。

The Commentary states: The third master holds that 'both parts exist.' Fascicle 73 states 'reflection' (cintā), which clarifies that there is a seeing-part; having an image resembling tathatā while not seeing the real nature of tathatā establishes that there is a sign-part, as extensively explained in those four propositions.