Mahabharata 3.81.79

गत्वा मधुवटीं चापि देव्यास्तीर्थं नरः शुचिःतत्र स्नात्वार्चयेद्देवान्पितॄंश्च प्रयतः शुचिःस देव्या समनुज्ञातो गोसहस्रफलं लभेत्

gatvā madhuvaṭīṃ cāpi devyāstīrthaṃ naraḥ śuciḥtatra snātvārcayeddevānpitṝṃśca prayataḥ śuciḥsa devyā samanujñāto gosahasraphalaṃ labhet

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