Mahabharata 12.141.1

युधिष्ठिर उवाच · yudhiṣṭhira uvāca

पितामह महाप्राज्ञ सर्वशास्त्रविशारदशरणं पालयानस्य यो धर्मस्तं वदस्व मे

pitāmaha mahāprājña sarvaśāstraviśāradaśaraṇaṃ pālayānasya yo dharmastaṃ vadasva me

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