Matsya Purana — Kārtavīrya Arjuna’s Solar Boon and the Genealogy from Kroṣṭu to the Yādava Lines
तस्य मध्ये ऽतिरात्रस्य सभामध्यात्समुत्थितः अतस्तु विद्वान्कर्मज्ञो यज्वा दाता पुनर्वसुः //
tasya madhye 'tirātrasya sabhāmadhyātsamutthitaḥ atastu vidvānkarmajño yajvā dātā punarvasuḥ //
In the midst of that Atirātra sacrifice, he rose from the very center of the assembly. Therefore he was (known as) a learned man, skilled in ritual action—one who had performed sacrifices and who gave gifts—(renowned as) Punarvasu.
This verse is not about Pralaya; it highlights ritual excellence—how prominence in a major Soma rite (Atirātra) is linked with learning, correct performance, and generosity.
It presents an ideal patron/householder: learned (vidvān), competent in rites (karma-jña), a sacrificer (yajvā), and a generous donor (dātā)—qualities especially expected of kings who sponsor public sacrifices and uphold dharma through dāna.
Ritually, it points to the Atirātra Soma sacrifice and the formal “assembly” (sabhā) setting—implying a structured sacrificial session where the honored participant rises in the midst of the gathering as part of ceremonial proceedings.