Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
वैधृतौ च व्यतीपाते नागे च शकुनौ तथा ।चतुष्पादे च किंस्तुघ्ने तथा यात्रां विवर्जयेत् ॥ ३ ॥
In the full Agni Purana this is chapter 233, verse 3.
Avoid travel on Vaidhriti and on vyatipata (a bad Sun and Moon yoga). Avoid it also in the karana (half of a moon day) called Naga, Shakuni, Chatushpada or Kimstughna.
Simple meaning: Do not travel on the bad Sun and Moon yogas or on the fixed bad half-days.
विपत्तारे नैधने च प्रत्यरौ चाथ जन्मनि ।
Avoid travel on the unlucky star counts, on the birth star, at sign edges and on empty moon days.
उदीची च तथा प्राची तयोरैक्यं प्रकीर्तितम् ।
North and east go together as one. West and south go together as one.
वाय्वग्निदिक्समुद्भूतं परिघं न तु लङ्घयेत् ।
Do not cross the line from north-west to south-east. Sunday, Monday and Saturday are not good.