Mahabharata 12.37.34

काष्ठैरार्द्रैर्यथा वह्निरुपस्तीर्णो न दीप्यतेतपःस्वाध्यायचारित्रैरेवं हीनः प्रतिग्रही

kāṣṭhairārdrairyathā vahnirupastīrṇo na dīpyatetapaḥsvādhyāyacāritrairevaṃ hīnaḥ pratigrahī

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