Brihat Samhita
सुरचापमन्द्रगर्जितविद्युत् प्रतिसूर्यका शुभा सन्ध्या । शशिशिवशक्रऽशास्थाः शान्तरवाः पक्षिमृगसङ्घाः ॥ २१-१६ ॥
The twilight is auspicious, adorned with a rainbow, gentle thunder, lightning, and a mock sun; the moon, Śiva, Indra, and the Sun appear favorable, and flocks of birds and herds of animals are calm and peaceful in their sounds.
english translation
suracApamandragarjitavidyut pratisUryakA zubhA sandhyA । zazizivazakra'zAsthAH zAntaravAH pakSimRgasaGghAH ॥ 21-16 ॥
hk transliteration by Sanscript