Brihat Samhita
हेमकान्तिरथ वा शुकवर्णः सस्यकेन मणिना सदृशो वा । स्निग्धमूर्तिरलघुश्च हिताय व्यत्यये न शुभकृत्शशिपुत्रः ॥ ७-२० ॥
If Mercury should be of the colour of gold or of a parrot or if he should resemble the hue of the Sasyaka gem, or if his disc should appear glossy or big in size, mankind will be happy; but if otherwise, they will be afflicted with miseries.
english translation
hemakAntiratha vA zukavarNaH sasyakena maNinA sadRzo vA । snigdhamUrtiralaghuzca hitAya vyatyaye na zubhakRtzaziputraH ॥ 7-20 ॥
hk transliteration by Sanscript