成唯識論述記 3.473

3.473

述曰：勝解印持曾為猶預境，今得決定事；此識行相𧄼瞢闇昧，境非先不定，今可須印之，故無勝解。

The Commentary states: Adhimokṣa determines an object that was previously doubtful, now arriving at a settled state; the ākāra of this consciousness is dull and dim, its object not being previously indeterminate such that it must now be determined, hence it lacks adhimokṣa.