Mahabharata 1.32.5

तप्यमानं तपो घोरं तं ददर्श पितामहःपरिशुष्कमांसत्वक्स्नायुं जटाचीरधरं प्रभुम्

tapyamānaṃ tapo ghoraṃ taṃ dadarśa pitāmahaḥpariśuṣkamāṃsatvaksnāyuṃ jaṭācīradharaṃ prabhum

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