Mahabharata 13.116.48
इदमन्यत्तु वक्ष्यामि प्रमाणं विधिनिर्मितम्पुराणमृषिभिर्जुष्टं वेदेषु परिनिश्चितम्
idamanyattu vakṣyāmi pramāṇaṃ vidhinirmitampurāṇamṛṣibhirjuṣṭaṃ vedeṣu pariniścitam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book