The sage Maitreya continued: O Vidura, all the progenitors of the universal population thus executed a sacrifice for thousands of years, for sacrifice is the best way to worship the Supreme Lord, Hari, the Personality of Godhead.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तेऽपि विश्वसृजः सत्रं सहस्रपरिवत्सरान् । संविधाय महेष्वास यत्रेज्य ऋषभो हरिः
te'pi viśvasṛjaḥ satraṃ sahasraparivatsarān | saṃvidhāya maheṣvāsa yatrejya ṛṣabho hariḥ
SB 4.2.34