Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
अनन्तरोऽपि यः शत्रुः सोऽपि मे कृत्रिमो मतः ।पार्ष्णिग्राहो भवेच्छत्रोर्मित्राणि रिपवस्तथा ॥ २२ ॥
In the full Agni Purana this is chapter 233, verse 22.
Even the next-door enemy, I think, is a made enemy. The Parshnigraha (the enemy at the rear) would be the enemy's man. Friends and enemies are likewise of the enemy.
Simple meaning: Even a next-door enemy is a made enemy. The enemy has his own friends and enemies too.
पार्ष्णिग्राहमुपायैश्च शमयेच्च तथा स्वकम् ।
Calm the enemy at the rear by the right means. Using a friend to cut down an enemy is praised.
मित्रं च शत्रुतामेति सामन्तत्वादनन्तरम् ।
A friend can turn into an enemy. A king who can do it alone should cut down the enemy himself.
प्रतापवृद्धौ तेनापि नामत्राज्जायते भयम् ।
When the king wins by his own strength, enemies no longer frighten him. He should keep people calm and trusting.