Brihat Samhita
तल्लक्षणो अस्थिकेतुः स तु रूक्षः क्षुद्भयऽवहः प्रोक्तः । स्निग्धस्तादृक्प्राच्यां शस्त्राख्यो डमरमरकाय ॥ ११-३० ॥
Asthi Ketu resembles the Vasā Ketu; but if it appears of sharp rays, there will be fear in the land. Śastra Ketu also resembles the Vasā Ketu but is glossy and appears in the west; and when it appears, there will be wars and deaths in the land.
english translation
tallakSaNo asthiketuH sa tu rUkSaH kSudbhaya'vahaH proktaH । snigdhastAdRkprAcyAM zastrAkhyo DamaramarakAya ॥ 11-30 ॥
hk transliteration by Sanscript