गोविन्द भाष्य (श्रील बलदेव विद्याभूषण - अचिन्त्यभेदाभेद वेदान्त ब्रह्मसूत्र भाष्य सटीक)

Saṁśaya (doubt): Is devotional service performed only before liberation, or is it
not?
Pūrvapakṣa (the opponent speaks): Because liberation is the goal to be attained
by performing devotional service, therefore devotional service is performed only as
long as one is not liberated.
Siddhānta (conclusion): In the following words the author of the sūtras gives
His conclusion.
Sūtra 12
āprāyaṇāt tatrāpi hi dṛṣṭam
ā—until; prāyaṇāt—liberation; tatra—there; api—even; hi—indeed; dṛṣṭam—
seen.
Until liberation. Even there it is seen.
Purport by Śrīla Baladeva Vidyābhūṣaṇa
Devotional service should be performed both before and after liberation. Why is
that? The sūtra explains, "hi dṛṣṭam". That means, "because it is seen in the Śruti-
śāstra. In the Sauparṇa-śruti it is said:
sarvadainam upāsīta yāvad vimuktiḥ. muktā api hy enam upāsate
"Before attaining liberation the great souls always worship the Lord. After
attaining liberation they continue to worship Him."
In this way it is said that the Lord is worshiped in both circumstances.
Here someone may object: The liberated souls do not worship the Lord. This is
so because they have no goal to attain by such worship and because the scriptures
do not order such worship.
To this I reply: That is true. Still, even though there is no scriptural order to
compel them, the liberated souls nevertheless worship the Lord because they are
attracted by His transcendental handsomeness. Also, a person who has jaundice
eats sugar candy as medicine, but when he is cured he also continues to eat sugar.