Mahabharata 3.81.17

एकहंसे नरः स्नात्वा गोसहस्रफलं लभेत्कृतशौचं समासाद्य तीर्थसेवी कुरूद्वहपुण्डरीकमवाप्नोति कृतशौचो भवेन्नरः

ekahaṃse naraḥ snātvā gosahasraphalaṃ labhetkṛtaśaucaṃ samāsādya tīrthasevī kurūdvahapuṇḍarīkamavāpnoti kṛtaśauco bhavennaraḥ

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