Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
इषोर्जमासयोः शस्त्रदुर्भिक्षाग्निभयप्रदः ।उदितश्चंद्रजः श्रेष्ठो रजतस्फटिकोपमः ॥ ५२ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 52.
In the months of Ashvina and Kartika, a risen Mercury brings fear of weapons, famine and fire. Mercury risen looking like silver or crystal is best.
Simple meaning: Mercury rising in Ashvina or Kartika brings weapon, famine and fire fear. A silver-white Mercury is best.
कार्तिको मार्गशीर्षश्च नृणां दुष्टफलप्रदः ।
Kartika and Margashirsha are bad for people. Pausha and Magha are good. Phalguna and Chaitra are middling.
माधवः शुभदो ज्येष्ठो नृणां मध्यफलप्रदः ।
Vaishakha, Shravana and Bhadrapada are good. Jyeshtha and Ashadha are middling.
अतिश्रेष्ठ इषः प्रोक्तो मासानां फलमीदृशम् ।
Jupiter moving through the northern part of the stars tends to bring safety, health and plenty of food.