成唯識論述記 1.138

1.138

述曰：「如是諸相」牒前我、法種種相義。下二句，難也，謂諸外道、二乘、世間聞說我、法性相非有，便作是難。若彼我、法性相非有，假我、法相。若計所執，若依他者，二種我、法依何得成？由彼識外，二真無故。內識上，二假依何立？要依彼真，可說假故。

The Commentary states: 'All such aspects' restates the previous meaning of the various aspects of self and phenomena. The next two lines are an objection, meaning that heterodox teachers, the two vehicles, and worldly people, hearing it said that the nature and characteristics of self and phenomena are non-existent, make this objection: If the nature and characteristics of that self and phenomena are non-existent, on what are the conventional aspects of self and phenomena—whether imagined or dependent—established as these two kinds of self and phenomena? Because outside of that consciousness, those two real [entities] are non-existent, on what are the two conventional [entities] on internal consciousness established? For only by depending on what is real can a convention be spoken of.