Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
वाय्वग्निदिक्समुद्भूतं परिघं न तु लङ्घयेत् ।आदित्यचन्द्रसौरास्तु दिवसाश्च न शोभनाः ॥ ६ ॥
In the full Agni Purana this is chapter 233, verse 6.
Do not cross the parigha (bar line) that runs from the north-west to the south-east. Sunday, Monday and Saturday are not good for travel.
Simple meaning: Do not cross the line from north-west to south-east. Sunday, Monday and Saturday are not good.
कृत्तिकाद्यानि पूर्वेण माघाद्यानि च याम्यतः ।
Each group of stars belongs to a direction: Krittika east, Magha south, Anuradha west, Dhanishta north.
सर्वद्वाराणि शस्तानि च्छायामानं वदामि ते ।
All the star doors are good. The shadow measure is 20 on Sunday and 16 on Monday.
भौमे पञ्चदशैवोक्ताश्चतुर्दश तथा बुधे ।
The shadow measure is 15 on Tuesday, 14 on Wednesday, 13 on Thursday and 12 on Friday.