Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
रावणो विजयश्चैव नन्दी वरुण एव च ।यमसौम्यौ भवश्चान्ते दश पञ्च मुहूर्तकाः ॥ १६ ॥
In the full Agni Purana this is chapter 123, verse 16.
Ravana and Vijaya, Nandi and Varuna, Yama and Saumya. Bhava comes last. These are the fifteen divisions of the day, each a muhurta (48 minutes).
Simple meaning: Seven more names complete the fifteen named parts of the day.
रौद्रे रौद्राणि कुर्वीत श्वेते स्नानादिकं चरेत् ।
Each named part of the day suits its own work, such as harsh work, bathing and marriage.
सावित्रे स्थापनाद्यं वा विरोचने नृपक्रिया ।
Savitra suits installing, Virochana a king's work, Jayadeva victory and Ravana battle.
विजये कृषिवाणिज्यं पटबन्धं च नन्दिनि ।
Vijaya suits farming and trade, Varuna tanks, and Yama destructive work.