Śrīmad-Bhāgavatam 10.84.51
Blended reading (Sanskrit + English inline)
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dravya-jñāna-kriyā-īśvaram
—
the Lord of paraphernalia, mantras, and rituals
dravya (substance) + jñāna (knowledge, mantra) + kriyā (action, ritual) + īśvara (Lord). Bhagavān is the īśvara of all three dimensions of yajña. Gauḍīyas read this as the technical statement that yajña has no element that is not, ultimately, Kṛṣṇa.
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prākṛtaiḥ
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unmodified, śruti-defined sacrifices
From prakṛti (original form). The original ritual templates of śruti. Paired with vaikṛtaiḥ — the legitimate adaptations. Gauḍīyas note that Vasudeva performs both grades, the conservative core and the lawful variations.
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agni-hotra
—
offering oblations into the sacred fire
agni (fire) + hotra (offering). The most fundamental fire-rite of the householder. Gauḍīyas note that even now, the Vaiṣṇava brāhmaṇa retains agnihotra; bhakti subsumes it, does not abolish it.
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īje
—
he worshiped
Perfect of √yaj. The internal action of yajña — to worship. Gauḍīyas note that yajña and ārādhana are functionally synonymous: both name the directed offering to a Person.
There are numerous kinds of Vedic fire sacrifice, each of which involves several elaborate rituals. The Brāhmaṇa portion of the Vedic śruti specifies the complete step-by-step procedure of only a few prototype sacrifices, such as the Jyotiṣṭoma and Darśa-pūrṇamāsa. These are called the prākṛta, or original, yajñas; the details of other yajñas must be extrapolated from the patterns of these prākṛta injunctions according to the strict rules of the Mīmāṁsā-śāstra. Since other yajñas are thus known by derivation from the prototype sacrifices, they are called vaikṛta, or “changed.”
Vasudeva worshipped Visnu, the lord of the materials such as oblations, of the mantras (jnana) and of the actions, by primary sacrifices such as jyotisoma, and darsa paurnamsa whose parts are prescribed in detail, and by secondary sacrifices such as the saurya and satra which are modified in form and rule.
He worshipped the Lord according to rules pertaining to sacrifice (anu-yajṣam). The rules are described. He worshipped the Lord of materials, mantras and ritual acts, Bhagavān, since he alone should be worshipped.
Vasudeva worships the Lord of all sacrificial paraphernalia using the very paraphernalia He is the Lord of — like offering a man flowers from his own garden. The līlā of yajña is that Bhagavān, being everything, consents to be offered with what is already His.
My note
Source: vedabase.io