Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
उत्तरा फल्गुनी याम्ये चित्रा नैर्ऋतसंस्थिता ।मूलं तु पश्चिमे न्यस्योत्तराषाढां तु वायवे ॥ ७ ॥
In the full Agni Purana this is chapter 128, verse 7.
Uttara Phalguni is in the south. Chitra stands in the south-west. Put Moola in the west, and Uttara Ashadha in the north-west.
Simple meaning: Uttara Phalguni goes south, Chitra south-west, Moola west and Uttara Ashadha north-west.
पूर्वभाद्रपदा सौम्ये रेवती ईशगोचरे ।
Purva Bhadrapada goes north and Revati north-east. The inner line holds eight nakshatras.
आर्द्रा हस्तस्तथाऽऽषाढाचतुष्कं चोत्तरात्रिकम् ।
Ardra, Hasta, Ashadha and an Uttara are the four pillars in the centre of the fort.
एवं दुर्गस्य विन्यासं बाह्ये स्थानं दिशाधिपात्।) आगन्तुको यदा योद्धा ऋक्षवान्स्यात्फलान्वितः
The fort figure is complete. A fighter coming from outside succeeds if he has the right nakshatra.