If the enemy comes clad in mail, his opponent also should put on armour. If the enemy advances with an army at his back, one should, calling into requisition, his own strength, give him the battle.
स चेत् सन्नद्ध आगच्छेत् सन्नद्धव्यं ततो भवेत्। स चेत् ससैन्य आगच्छेत् ससैन्यस्तमथाह्वयेत्॥