Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 10 · Yatra and Omens
यात्रा शकुनाश्च
नीचगोऽरिगृहस्थो वा वक्रगो वा पराजितः ।यातुर्भंगप्रदः शुक्रः स्वोच्चस्थश्चेज्जयप्रदः ॥ ६३८ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 638.
Venus at its nicha (low point), in an enemy's house, moving backward or beaten can bring loss to the traveler. If Venus stands at its own uchcha (high point), it gives victory.
Simple meaning: Venus low, in an enemy's house, backward or beaten can break the journey. Venus high brings victory.
स्वाष्टलग्नेष्टराशौ वा शत्रुभात्त्वष्टमेपि वा ।
A journey rising sign that is the 8th from your birth chart can put life at risk, the verse says.
जन्मेशाष्टमलग्नेशौ मिथो मित्रे व्यवस्थितौ ।
If the birth sign lord and the 8th sign lord are friends, the 8th sign fault goes away.
क्रूग्रहेक्षितो युक्तो द्विःस्वभावोऽपि भंगदः ।
A dual sign with bad planets can break the journey. A fixed rising sign is not good, even with good planets.