I (Kasyapa Muni) offer my obeisances unto You (the Supreme Personality of Godhead), whose heart and soul are the three Vedic rituals (karma-kanda, jnana-kanda and upasana-kanda) and who expand these rituals in the form of sacrifice

Expressions researched:
"I offer my obeisances unto You, whose heart and soul are the three Vedic rituals" |"and who expand these rituals in the form of sacrifice"

SB Canto 8

I offer my respectful obeisances unto You, the Supreme Personality of Godhead, who have two heads (prāyaṇīya and udāyanīya), three legs (savana-traya), four horns (the four Vedas) and seven hands (the seven chandas, such as Gāyatrī). I offer my obeisances unto You, whose heart and soul are the three Vedic rituals (karma-kāṇḍa, jñāna-kāṇḍa and upāsanā-kāṇḍa) and who expand these rituals in the form of sacrifice.

SB 8.16.31, Translation:

I offer my respectful obeisances unto You, the Supreme Personality of Godhead, who have two heads (prāyaṇīya and udāyanīya), three legs (savana-traya), four horns (the four Vedas) and seven hands (the seven chandas, such as Gāyatrī). I offer my obeisances unto You, whose heart and soul are the three Vedic rituals (karma-kāṇḍa, jñāna-kāṇḍa and upāsanā-kāṇḍa) and who expand these rituals in the form of sacrifice.