Mahabharata 15.43.12

आस्तीक उवाच · āstīka uvāca

ऋषिर्द्वैपायनो यत्र पुराणस्तपसो निधिःयज्ञे कुरुकुलश्रेष्ठ तस्य लोकावुभौ जितौ

ṛṣirdvaipāyano yatra purāṇastapaso nidhiḥyajñe kurukulaśreṣṭha tasya lokāvubhau jitau

Our plain-language meaning of this verse is waiting for scholar review.