You should always, O Yudhishthira, be careful to ascertain your own shortcomings as also those of your enemies. The shortcomings also of your own men as also of the men of your enemies should equally be known.
गोवद्रासभवश्चैव कुर्युर्ये व्यवहारिणः। स्वरन्ध्र पररन्धं च स्वेषु चैव परेषु च॥ उपलक्षयितव्यं ते नित्यमेव युधिष्ठिर।