成唯識論述記 5.177

5.177

述曰：執彼第八是我、之我，前我五蘊假者，第六所緣，後我第七所計。或前我前念，後我後念，二但第七所計。或即一念計此即是此，唯第七所計。或前是體，後我是用，於一我見之上，亦義說之為我及所二言。實但一我見。

The Commentary states: Grasping that eighth [consciousness] as 'the self's self': the former 'self' is the nominal entity of the five aggregates, the object taken by the sixth [consciousness]; the latter 'self' is what is conceived by the seventh [consciousness]. Or, the former 'self' is the prior moment and the latter 'self' is the subsequent moment, both being conceived solely by the seventh [consciousness]. Or, in a single moment it conceives this as being precisely this, conceived solely by the seventh [consciousness]. Or, the former is the substance and the latter self is the function; upon a single self-view, it is also conceptually spoken of using the two words 'self' and 'mine'. In reality, there is only a single self-view.