成唯識論述記 4.315

4.315

述曰：即第三遮。此唯第六意識中者，五識雖亦無雜起者，無色全無，如前類遮，非此所說。及意中別報者，雖遍趣生起時無雜，而不恒有，有間斷故；六位無故。或無漏心，異類心中，皆說無故，即第二恒因簡。然此雖復說不共因，亦說共因謂遍、無雜二。有體，通上亦有故，此中不說。然此說所有者，影顯前後皆有，所具因故，類此應說，恐厭煩文故略影顯。

The Commentary states: This is the third exclusion. This refers only to those in the sixth mental consciousness. Although the five consciousnesses also arise without mixture, they are completely absent in the formless realm, as was excluded analogously above, and are not what is spoken of here. As for the particular retributions in the mental consciousness, although they pervade destinies and modes of birth and arise without mixture, they are not constantly present, because they have interruptions; because they are absent in the six states. Or because in unworldly minds and minds of different categories they are all said to be absent; this is an exclusion by the second reason, constancy. However, although this states an uncommon reason, it also implies common reasons, namely the two: pervasiveness and unmixedness. Having substantial existence is also present in common with the above, hence it is not stated here. However, stating what is present foreshadows that what precedes and follows both have the reasons they possess; they should be stated analogously, but to avoid tedious text it is briefly foreshadowed.