Mahabharata 3.80.94

तीर्थं चात्र परं पुण्यं वसूनां भरतर्षभतत्र स्नात्वा च पीत्वा च वसूनां संमतो भवेत्

tīrthaṃ cātra paraṃ puṇyaṃ vasūnāṃ bharatarṣabhatatra snātvā ca pītvā ca vasūnāṃ saṃmato bhavet

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