Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
सर्वकार्येषु चैतानि ज्येष्ठा चित्रा विशाखया ।पूर्वास्तिस्रोऽग्निर्भरणी मघार्द्राश्लेषा दारुणाः ॥
In the full Agni Purana this is chapter 126, verse 15.
These are for all works. Jyeshtha, Chitra and Vishakha, the three Purva nakshatras (stars), Krittika, Bharani, Magha, Ardra and Ashlesha are the harsh ones.
Simple meaning: Some nakshatras are good for all work. The harsh ones follow, including Bharani, Magha, Ardra and Ashlesha.
स्थावरेषु स्थिरं ह्यृक्षं यात्रायां क्षिप्रमुत्तमम् ।
Match the work to the nakshatra: fixed for lasting things, quick for travel, soft for luck, fierce for fierce work.
दारुणे दारुणं कुर्याद्वक्ष्ये चाधोमुखादिकम् ।
Harsh nakshatras suit harsh work. The down-facing nakshatras begin: Krittika, Bharani, Ashlesha, Vishakha and two more.
पूर्वात्रयमधोवक्त्रं कर्म चाधोमुखं चरेत् ।
Down-facing nakshatras suit digging wells and tanks, study and a doctor's treatment.