Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
तथैव ग्रामभेदाः स्युर्मोक्षभेदास्तथा दश ।नो शक्ता लक्षितुं देवाः किं पुनः प्राकृता जनाः ॥ ९० ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 90.
In the same way there are ten kinds of covering and ten kinds of release. Even the gods cannot mark them; how could common people?
Simple meaning: Eclipses have ten kinds of covering and ten of release. Even gods cannot tell them all.
आनीय खेटान्गणितांस्तेषां वारं विचिंतयेत् ।
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.