Mahabharata 13.17.38
महातपा घोरतपा अदीनो दीनसाधकःसंवत्सरकरो मन्त्रः प्रमाणं परमं तपः
mahātapā ghoratapā adīno dīnasādhakaḥsaṃvatsarakaro mantraḥ pramāṇaṃ paramaṃ tapaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book