Mahabharata 13.121.2

भीष्म उवाच · bhīṣma uvāca

अत्राप्युदाहरन्तीममितिहासं पुरातनम्मैत्रेयस्य च संवादं कृष्णद्वैपायनस्य च

atrāpyudāharantīmamitihāsaṃ purātanammaitreyasya ca saṃvādaṃ kṛṣṇadvaipāyanasya ca

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