Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Travel Muhurta
यात्रामण्डलचिन्ता
कृत्तिकाद्यानि पूर्वेण माघाद्यानि च याम्यतः ।मैत्राद्यान्यपरे चाथ वासवाद्यानि वाऽप्युदक् ॥ ७ ॥
In the full Agni Purana this is chapter 233, verse 7.
The nakshatras (stars) from Krittika on belong to the east. Those from Magha on belong to the south. Those from Anuradha on belong to the west. Those from Dhanishta on belong to the north.
Simple meaning: 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.
एकादश तथा सौरे सर्वकर्मसु कीर्तिताः ।
The measure is 11 on Saturday. Do not leave at your birth lagna or with a rainbow ahead.