Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 10 · Yatra and Omens
यात्रा शकुनाश्च
शीर्षोदये लग्नगते दिग्लग्ने लग्नगेपि वा ।शुभवर्गोथ वा लग्ने यातुः शत्रुक्षयस्तदा ॥ ६४४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 644.
The traveler may overcome enemies in these cases. A shirshodaya (head-first rising sign) is the lagna (rising sign). Or the sign of the direction is in the lagna. Or the lagna falls in a good planet's division.
Simple meaning: 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.
जललग्नो जलांशो वा जलयोनेः शुभावहः ।
A water sign is good for water travel. The first five houses are body, treasury, bowman, vehicle and counsel.