Brihat Samhita
विलम्बिनो द्रुमौपमाः खरारुणप्रकाशिनः । घनाः शिवाय सन्ध्ययोः पुरौपमाः शुभावहाः ॥ ३०-२९ ॥
If at sunrise or sunset clouds should appear to hang above the horizon and of the shape of trees and red and of disagreeable appearance, there will be prosperity in the land; if the clouds should assume the shape of towns, mankind will be happy.
english translation
vilambino drumaupamAH kharAruNaprakAzinaH । ghanAH zivAya sandhyayoH puraupamAH zubhAvahAH ॥ 30-29 ॥
hk transliteration by Sanscript