Mahabharata 8.4.33

दुर्मर्षणो दुर्विषहो दुर्जयश्च महारथःकृत्वा नसुकरं कर्म गता वैवस्वतक्षयम्

durmarṣaṇo durviṣaho durjayaśca mahārathaḥkṛtvā nasukaraṃ karma gatā vaivasvatakṣayam

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