Mahabharata 1.2.103

एतत्सर्वं सभापर्व समाख्यातं महात्मनाअध्यायाः सप्ततिर्ज्ञेयास्तथा द्वौ चात्र संख्यया

etatsarvaṃ sabhāparva samākhyātaṃ mahātmanāadhyāyāḥ saptatirjñeyāstathā dvau cātra saṃkhyayā

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