Mahabharata 13.28.20

ब्राह्मण्यां वृषलाज्जातं पितर्वेदयतीह माम्अमानुषी गर्दभीयं तस्मात्तप्स्ये तपो महत्

brāhmaṇyāṃ vṛṣalājjātaṃ pitarvedayatīha māmamānuṣī gardabhīyaṃ tasmāttapsye tapo mahat

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