Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
आनीय खेटान्गणितांस्तेषां वारं विचिंतयेत् ।शुभाशुभान्यैः कालस्य ग्राहयामो हि लक्षणम् ॥ ९१ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 91.
Work out the planets and think about their movement. Through them we grasp the good and bad marks of the time.
Simple meaning: Work out the planets and watch their movement. They show the good and bad of the time.
तस्मादन्वेषणीयं तत्कालज्ञानाय धीमता ।
A wise person watches the rising and setting of comets to know the time and its results.
दिव्यांतरिक्षा भौमास्ते शुभाशुभफलप्रदाः ।
Comets are of the heavens, the mid-sky or the earth, and give good or bad results.
स्तम्भशूलांकुशाकारा आंतरिक्षाः प्रकीर्तिताः ।
Comets in the stars are heavenly, those shaped like objects are of the mid-sky, those on the ground earthly.