Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 10 · Yatra and Omens
यात्रा शकुनाश्च
दिगीश्वरे ललाटस्थे यातुर्न पुनरागमः ।लग्नस्थो भास्करः प्राच्यां दिशि यातुर्ललाटगः ॥ ६२८ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 628.
When the lord of the direction stands on the forehead, the traveler may not come back. For one going east, the Sun in the lagna (rising sign) is on the forehead.
Simple meaning: The traveler may not return if the lord of his direction is on the forehead.
द्वादशैकादशः शुक्रोऽप्याग्नेय्यां तु ललाटगः ।
Venus in the 12th or 11th spoils the south-east. Mars in the 10th spoils the south.
नवमाष्टमगो राहुर्नैर्ऋत्यां तु ललाटगः ।
Rahu in the 9th or 8th spoils the south-west. Saturn in the 7th spoils the west.
षष्ठः पञ्चमगश्चन्द्रो वायव्यां च ललाटगः ।
The Moon in the 6th or 5th spoils the north-west. Mercury in the 4th spoils the north.