The king, even if very powerful, should not neglect a foe however weak. A scintillation of fire can produce a conflagration and a particle of Poison can kill.
न च शत्रुरवज्ञेयो दुर्बलोऽपि बलीयसा। अल्पोऽपि हि दहत्यग्निविषमल्पं हिनस्ति च॥