Mahabharata 2.38.39
गाथामप्यत्र गायन्ति ये पुराणविदो जनाःभीष्म यां तां च ते सम्यक्कथयिष्यामि भारत
gāthāmapyatra gāyanti ye purāṇavido janāḥbhīṣma yāṃ tāṃ ca te samyakkathayiṣyāmi bhārata
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book