Mahabharata 13.129.36

फेनपानामृषीणां यो धर्मो धर्मविदां सदातं मे शृणु महाभागे धर्मज्ञे धर्ममादितः

phenapānāmṛṣīṇāṃ yo dharmo dharmavidāṃ sadātaṃ me śṛṇu mahābhāge dharmajñe dharmamāditaḥ

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