成唯識論演祕 1.485

1.485

有義二釋：一云，有慮無慮皆不成故；二云，若有慮者，常住不成；若無慮者，作、受不成。

There are two explanations by some: One says: because having deliberation and lacking deliberation are both unproven. The second says: if it has deliberation, its permanence is unproven; if it lacks deliberation, its acting and experiencing are unproven.