A king should, by devoted secret agents, watch the conduct and acts of other kings. By such means can he acquire superiority.
ये केचिद् भूमिपतयः सर्वांस्तानन्ववेक्षयेत्। सुहृद्भिरनभिख्यातैस्तेन राजातिरिच्यते॥