Mahabharata 12.149.30

तपः कुरुत वै तीव्रं मुच्यध्वं येन किल्बिषात्तपसा लभ्यते सर्वं विलापः किं करिष्यति

tapaḥ kuruta vai tīvraṃ mucyadhvaṃ yena kilbiṣāttapasā labhyate sarvaṃ vilāpaḥ kiṃ kariṣyati

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