योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-37, verse-46

शरधाराधरा मेघाः शरोर्णापूर्णमेषकाः ।
शरपत्रावृता वृक्षा भ्रमुस्तद्गर्जनागजाः ॥ ४६ ॥

śaradhārādharā meghāḥ śarorṇāpūrṇameṣakāḥ ,
śarapatrāvṛtā vṛkṣā bhramustadgarjanāgajāḥ 46

46. The flying arrows seemed as showering clouds, and their feathers appeared as the woolly breed; their reedy shafts seeming as trees, were roving with the roar of elephants.