One verse

Srimad Bhagavatam 9.7.22

9.7.22

विश्वामित्रोऽभवत् तस्मिन् होता चाध्वर्युरात्मवान् । जमदग्निरभूद् ब्रह्मा वसिष्ठोऽयास्य: सामग: ॥ २२ ॥

visvamitro ’bhavat tasmin hota cadhvaryur atmavan jamadagnir abhud brahma vasistho ’yasyah sama-gah

visvamitrah
the great sage and mystic Visvamitra
abhavat
became
tasmin
in that great sacrifice
hota
the chief priest to offer oblations
ca
also
adhvaryuh
a person who recites hymns from the Yajur Veda and performs ritualistic ceremonies
atmavan
fully self-realized
jamadagnih
Jamadagni
abhut
became
brahma
acting as the chief brahmana
vasisthah
the great sage
ayasyah
another great sage
sama-gah
engaged as the reciter of the Sama Veda mantras.

In that great human sacrifice, Visvamitra was the chief priest to offer oblations, the perfectly self-realized Jamadagni had the responsibility for chanting the mantras from the Yajur Veda, Vasistha was the chief brahminical priest, and the sage Ayasya was the reciter of the hymns of the Sama Veda.