One verse

Srimad Bhagavatam 9.1.15

9.1.15

प्रेषितोऽध्वर्युणा होता व्यचरत् तत् समाहित: । गृहीते हविषि वाचा वषट्कारं गृणन्द्विज: ॥ १५ ॥

presito ’dhvaryuna hota vyacarat tat samahitah grhite havisi vaca vasat-karam grnan dvijah

presitah
being told to execute the sacrifice
adhvaryuna
by the rtvik priest
hota
the priest in charge of offering oblations
vyacarat
executed
tat
that (sacrifice)
samahitah
with great attention
grhite havisi
upon taking the clarified butter for the first oblation
vaca
by chanting the mantra
vasat-karam
the mantra beginning with the word vasat
grnan
reciting
dvijah
the brahmana.

Told by the chief priest Now offer oblations the person in charge of oblations took clarified butter to offer.