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

"At the time of death a person's knowledge, deeds, and concept of life combine
to determine his future."
This passage shows that knowledge and pious deeds both together determine
the soul's future.
Sūtra 6
tadvato vidhānāt
tadvataḥ—like that; vidhānāt—because of the rule.
Because of a rule like that.
Purport by Śrīla Baladeva Vidyābhūṣaṇa
In the Taittirīya-saṁhitā it is said:
brahmiṣṭho brahmā darśa-paurṇamāsayos taṁ vṛṇīte
"To perform the darśa and paurṇamāsa rites, he chooses a priest learned in the
science of the Supreme."
Thus it is clearly seen that transcendental knowledge is only a subordinate part
of the Vedic rituals, for such knowledge only qualifies one to be a priest.
Sūtra 7
niyamāc ca
niyamāt—because of a rule; ca—also.
Also because of a rule.