Brihat Samhita
पृथुबहुलस्निग्धघनं घनसूचीक्षुरकलोहिताभ्रयुतम् । काकाण्डमेचकऽभं वियद्विशुद्धैन्दुनक्षत्रम् ॥ २१-१५ ॥
The sky is vast, thick, smooth, and dense, filled with dark needle-like clouds, sugarcane-blue and reddish masses; it appears crow-egg dark in color, yet the heavens are pure, with the moon and stars clearly visible.
english translation
pRthubahulasnigdhaghanaM ghanasUcIkSurakalohitAbhrayutam । kAkANDamecaka'bhaM viyadvizuddhaindunakSatram ॥ 21-15 ॥
hk transliteration by Sanscript