From Rāmānuja’s commentary
the cessation of such bondage is to be obtained only through the grace of the highest Self pleased by the devout meditation of the worshipper
texts such as 'But different is the highest Person' (Bha. Gî. XV, 17), and 'Having known the Self and the Mover as separate' (Svet. Up. I, 6), teach that it is the cognition of Brahman as the inward ruler different from the individual soul, that effects the highest aim of man, i.e. final release.
All this confirms our theory, viz. that since bondage springs from ajnâna in the form of an eternal stream of karman, it can be destroyed only through knowledge of the kind maintained by us. Such knowledge is to be attained only through the due daily performance of religious duties as prescribed for a man's caste and âsrama, such performance being sanctified by the accompanying thought of the true nature of the Self, and having the character of propitiation of the highest Person. Now, that mere works produce limited and non-permanent results only, and that on the other hand works not aiming at an immediate result but meant to please the highest Person, bring about knowledge of the character of devout meditation, and thereby the unlimited and permanent result of the intuition of Brahman being the Self of all