Mahabharata 14.17.34

इहैवाशुभकर्मा तु कर्मभिर्निरयं गतःअवाक्स निरये पापो मानवः पच्यते भृशम्तस्मात्सुदुर्लभो मोक्ष आत्मा रक्ष्यो भृशं ततः

ihaivāśubhakarmā tu karmabhirnirayaṃ gataḥavāksa niraye pāpo mānavaḥ pacyate bhṛśamtasmātsudurlabho mokṣa ātmā rakṣyo bhṛśaṃ tataḥ

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