Mahabharata 13.36.1

भीष्म उवाच · bhīṣma uvāca

अत्राप्युदाहरन्तीममितिहासं पुरातनम्शक्रशम्बरसंवादं तन्निबोध युधिष्ठिर

atrāpyudāharantīmamitihāsaṃ purātanamśakraśambarasaṃvādaṃ tannibodha yudhiṣṭhira

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