If the invader does not act thus, he can never succeed in crushing his enemy completely. In dealing with the foe, care should be taken for attacking him from all sides.
न हि तस्यान्यथा पीडा शक्या कर्तुं तथाविधा। यथा सार्धममित्रेण सर्वतः प्रतिबाधनम्॥