Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
पुनर्वक्ष्यामि गण्डान्तमृक्षमध्ये यथा स्थितम् ।रेवत्यन्ते(न्तं) चतुष्कं तु अश्विन्यादिचतुष्टयम् ॥
In the full Agni Purana this is chapter 126, verse 33.
Again I will tell the gandanta (the edge-point between signs), as it lies among the nakshatras (stars). Avoid four ghatikas (24-minute units) at the end of Revati. And four from the start of Ashvini.
Simple meaning: Avoid the last 96 minutes of Revati and the first 96 minutes of Ashvini.
उभयोर्याममात्रं तु वर्जयेत्तत्प्रयत्नतः ।
Avoid about three hours at the Revati-Ashvini joint, and about 1.5 hours at Ashlesha-Magha.
द्वितीयं गण्डमाख्यातं तृतीयं भैरवि शृणु ।
The third edge, between Jyeshtha and Moola, is a fierce stretch of time.
न कुर्याच्छुभकर्माणि यदीच्छेदात्मजीवितम् ।
Avoid good works at these times. A child born then can bring death to the parents.