Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 10 · Yatra and Omens
यात्रा शकुनाश्च
विनाशयत्यरीन्राजा पापान्भागीरथी यथा ।ये नृपा यान्त्यरीञ्जेतुं तेषां योगैर्नृपाह्वयैः ॥ ६७४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 674.
With that combination, the king may overcome his enemies, as the Ganga washes away sins. Then there are kings who march to conquer enemies under these royal combinations.
Simple meaning: Last combination: the king may overcome his foes. The next verse tells what follows for kings using these combinations.
उपैति शांतिं कोपाग्निः शत्रुयोषाश्रुबिंदुभिः ।
Their anger cools as the enemies' wives weep. The bright 10th day of Ashvina is called Vijaya.
विजयस्तत्र यातॄणां सधिर्वा न पराजयः ।
Marching on Vijaya day brings victory or a truce, never defeat. A glad mind matters more than omens.
तस्मान्मनस्विनां यत्नात्फलहेतुर्मनोदयः ।
A glad mind brings results. Do not set out while a festival, wedding or period of ritual impurity is unfinished.