īje 'nu-yajñaḿ vidhinā
agni-hotrādi-lakṣaṇaiḥ
prākṛtair vaikṛtair yajñair
dravya-jñāna-kriyeśvaram
ije -- he worshiped; anu-yajnam -- with each kind of sacrifice; vidhina -- by the proper regulations; agni-hotra -- by offering oblations into the sacred fire; adi -- and so on; lakshanaih -- characterized; prakritaih -- unmodified, completely specified by sruti injunctions; vaikritaih -- modified, adjusted according to the indications of other sources; yajnaih -- with sacrifices; dravya -- of the sacrificial paraphernalia; jnana -- of the knowledge of mantras; kriya -- and of the rituals; isvaram -- the Lord.
Performing various kinds of Vedic sacrifice according to the proper regulations, Vasudeva worshiped the Lord of all sacrificial paraphernalia, mantras and rituals. He executed both primary and secondary sacrifices, offering oblations to the sacred fire and carrying out other aspects of sacrificial worship.
There are numerous kinds of Vedic fire sacrifice, each of which involves several elaborate rituals. The Brahmana portion of the Vedic sruti specifies the complete step-by-step procedure of only a few prototype sacrifices, such as the Jyotishtoma and Darsa-purnamasa. These are called the prakrita, or original, yajnas; the details of other yajnas must be extrapolated from the patterns of these prakrita injunctions according to the strict rules of the Mimamsa-sastra. Since other yajnas are thus known by derivation from the prototype sacrifices, they are called vaikrita, or "changed."
