Mahabharata 12.263.3
अधनो ब्राह्मणः कश्चित्कामाद्धर्ममवैक्षतयज्ञार्थं स ततोऽर्थार्थी तपोऽतप्यत दारुणम्
adhano brāhmaṇaḥ kaścitkāmāddharmamavaikṣatayajñārthaṃ sa tato'rthārthī tapo'tapyata dāruṇam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book