Brihat Samhita
श्यावारुण नीलासृग्दहनासितभस्मसन्निभा रूक्षा । सन्ध्यादिनजा वक्रा दलिता च परऽगमभयाय ॥ ३३-१६ ॥
If the colour of the meteor should be white, black, red, blue, of blood color, of the colour of fire, or black, or of the colour of ash, and if its appearance should be fearful, and if it should appear either immediately before sunrise or after sunset or during the day, or if it should appear crooked or cut into halves, there will be fear of foreign invasion.
english translation
zyAvAruNa nIlAsRgdahanAsitabhasmasannibhA rUkSA । sandhyAdinajA vakrA dalitA ca para'gamabhayAya ॥ 33-16 ॥
hk transliteration by Sanscript