Mahabharata 13.130.41
शैवालं शीर्णपर्णं वा तद्व्रतो यो निषेवतेशीतयोगवहो नित्यं स गच्छेत्परमां गतिम्
śaivālaṃ śīrṇaparṇaṃ vā tadvrato yo niṣevateśītayogavaho nityaṃ sa gacchetparamāṃ gatim
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book