Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
आसारस्तु ततोऽन्यः स्यादाक्रन्दासार उच्यते ।जिगीषोः शत्रुयुक्तस्य विमुक्तस्य तथा द्विज ॥ १७ ॥
In the full Agni Purana this is chapter 233, verse 17.
After that comes another, the Asara (the rear enemy's helper). Then comes the one called Akrandasara (the rear ally's helper). Now hear about three kings, O Brahmin. They are the one who wants to win, the one joined to an enemy, and the one standing free.
Simple meaning: Behind the king come the rear enemy's helper and the rear ally's helper.
नात्रापि निश्चयः शक्यो वक्तुं मनुजपुंगव ।
A king who can hold back or help both sides is called the middle king.
निग्रहानुग्रहेऽशक्तः सर्वेषामपि यो भवेत् ।
A strong king who does not hold back or help anyone is called the neutral king.
न कस्यचिद्रिपुर्मित्रं कारणाच्छत्रुमित्रके ।
No one is a born enemy or friend. Reasons make them so. The circle has twelve kings.