Mahabharata 13.111.1

युधिष्ठिर उवाच · yudhiṣṭhira uvāca

यद्वरं सर्वतीर्थानां तद्ब्रवीहि पितामहयत्र वै परमं शौचं तन्मे व्याख्यातुमर्हसि

yadvaraṃ sarvatīrthānāṃ tadbravīhi pitāmahayatra vai paramaṃ śaucaṃ tanme vyākhyātumarhasi

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