Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
स्वाम्यमात्यस्तथा दुर्गः कोषो दण्डस्तथैव च ।मित्रं जनपदश्चैव राज्यं सप्ताङ्गमुच्यते ॥ १२ ॥
In the full Agni Purana this is chapter 233, verse 12.
The lord, the minister, the fort, the treasury, the army, the ally and the land and people: a kingdom is said to have seven limbs.
Simple meaning: A kingdom has seven parts: king, minister, fort, treasury, army, ally and land.
सप्ताङ्गस्य तु राज्यस्य विघ्नकर्तॄन्विनाशयेत् ।
A king should remove whoever blocks his kingdom and grow in every circle around him.
आत्ममण्डलमेवात्र प्रथमं मण्डलं भवेत् ।
The king's own land is the first circle. The kings on its border are its enemies.
उपेतस्तु सुहृज्ज्ञेयः शत्रुमित्रमतः परम् ।
Know the friend, then the enemy's friend, then the friend's friend, then that one's enemy.