Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
कुक्षिस्थिते फलं स्याच्च राहुचक्रं वदाम्यहम् ।इन्द्राच्च नैर्ऋतं गच्छेन्नैर्ऋतात्सोममेव च ॥ ३३ ॥
In the full Agni Purana this is chapter 125, verse 33.
If it sits in the belly, there will be a good result. I will now tell the Rahu wheel. Rahu goes from the east to the south-west. From the south-west to the north.
Simple meaning: The belly position gives a good result. In the Rahu wheel, Rahu moves from east to south-west, then north.
सोमाद्धुताशनं वह्नेराप्यमाप्याच्छिवालयम् ।
Rahu moves through all eight directions in a ring and comes back to the east.
भुङ्क्ते चतस्रो नाड्य(डी)स्तु राहुः पृष्ठे जयो रणे ।
Rahu behind brings victory in battle and Rahu in front brings death.
आग्नेयादि शिवान्तं च पूर्णिमामादितः प्रिये ।
From the full moon on, Rahu moves through the directions, and his look brings victory.