Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 10 · Yatra and Omens
यात्रा शकुनाश्च
जन्मोदये जन्मभे वा तयोरीशस्यभेपि वा ।ताभ्यां तयोरिकेंद्रेषु यातुः शत्रुक्षयो भवेत् ॥ ६४३ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 643.
Say the lagna (rising sign) is the janma lagna (rising sign at birth), the birth sign, or their lord's sign. Then the traveler may overcome his enemies. The same holds in the kendra (corner house) signs of these.
Simple meaning: If the rising sign is the birth rising sign or birth sign, the traveler can overcome his enemies.
शीर्षोदये लग्नगते दिग्लग्ने लग्नगेपि वा ।
A head-first rising sign or a good planet's division in the lagna can help the traveler overcome enemies.
शत्रुजन्मोदये जन्मराशेर्वा निधनोदये ।
The enemy's birth rising sign or his 8th sign as lagna can help the traveler overcome enemies.
वक्रः पन्था मीनलग्ने यातुर्मीनांशकेपि वा ।
Pisces can make the road crooked. Aquarius is not advised for any journey.