Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 1 · Muhurta: Marriage, Home, Farming
ज्योतिःशास्त्रम्
कृत्तिकायां नवदिनं त्रिरात्रं रोहिणीषु च ।मृगशिरः पञ्चरात्रमार्द्रासु प्राणनाशनम् ॥ ७१ ॥
In the full Agni Purana this is chapter 121, verse 71.
Krittika: nine days. Rohini: three nights. Mrigashira: five nights. Ardra: the verse says it takes the life.
Simple meaning: Trouble starting in Krittika lasts nine days, Rohini three, Mrigashira five. Ardra can bring death.
पुनर्वसौ च पुष्ये च सप्तरात्रं विधीयते ।
Trouble starting in Punarvasu or Pushya lasts seven nights, Ashlesha nine. Magha can bring death.
द्वौ मासौ पूर्वफाल्गुन्यामुत्तरासु त्रिपञ्चकम् ।
Purva Phalguni means two months. Uttara Phalguni, Hasta and Chitra mean about fifteen days.
मासद्वयं तथा स्वातिविशाखा विंशतिर्दिनम्(?) ।
Swati means two months, Vishakha about twenty days, Anuradha ten days and Jyeshtha half a month.