Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
क्षेमं सुभिक्षमारोग्यं कुरुते रोगनाशनम् ।अहिर्बुध्न्यार्यमाग्नेययाम्यभेषु चरन्बुधः ॥ ४२ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 42.
... brings welfare, plenty and health, and ends illness. Mercury moving in Uttara Bhadrapada, Uttara Phalguni, Krittika and Bharani ...
Simple meaning: Mercury in the six stars from Hasta brings welfare, food and health.
भिषक्तरंगवाणिज्यवृत्तीनां नाशकृत्तदा ।
Mercury in those stars may harm the work of doctors, seafarers and traders.
क्षुच्छस्त्रानलचौरेभ्यो भयदः प्राणिनां तदा ।
Mercury splitting a Purva star brings fear of hunger and thieves. Its path is natural in four stars.
रौद्रेन्दुसार्पपित्र्येषु ज्ञेया मिश्राह्वया गतिः ।
Mercury's path is mixed in some stars and short in others.