inscription in fairly standard Sanskrit that has survived into the modern era. It represents a turning point in Sanskrit epigraphy, states Salomon, being "the first extensive record in the poetic style" in "more or less standard Sanskrit". The Rudradaman inscription is "not pure classical Sanskrit", but with few epic-vernacular Sanskrit exceptions, it approaches high classical Sanskrit. It is important because it is likely the prototype of the extensive Sanskrit inscriptions of the Gupta Empire era. These inscriptions are also in the Brāhmī script. During the reign of Rudradaman, circa 150 CE, it is also known that the Greek writer Yavanesvara translated the Yavanajataka from Greek to Sanskrit, for "the use of those who could not speak Greek", a translation which became an authority for all later astrology works in India. The spread of the usage of Sanskrit inscriptions to the south can also probably be attributed to the influence of the Western Satraps, who were in close relation with southern Indian rulers: according to Salomon "a Nagarjunakonda memorial pillar inscription of the time of King Rudrapurusadatta attests to a marital alliance between the Western Ksatrapas and the Iksvaku rulers of Nagarjunakonda". The Nagarjunakonda inscriptions are the earliest substantial South Indian Sanskrit inscriptions, probably from the late 3rd-century to early 4th-century CE. These inscriptions are related to Buddhism and to the Shaivism tradition of Hinduism, and parts of them reflect both standard Sanskrit and hybridized Sanskrit. An earlier hybrid Sanskrit inscription found on Amaravati slab is dated to the late 2nd-century, while a few later ones include Sanskrit inscriptions along with Prakrit inscriptions related to Hinduism and Buddhism. After the 3rd-century CE, Sanskrit inscriptions dominate and many have survived. Possible vassalage to the Kushans It is still unclear whether the Western Satraps were independent rulers or vassals of the Kushan Empire (30–375 CE). The continued use of the word "Satrap" on their coin would suggest a recognized subjection to a higher ruler, possibly the Kushan emperor. Also, a statue of Chastana was found in Mathura at the Temple of Mat together with the famous statues of Vima Kadphises and Kanishka. The statue has the inscription "Shastana" (Middle Brahmi script: Sha-sta-na). This also would suggest at least alliance and friendship, if not vassalage. Finally Kanishka claims in the Rabatak inscription that his power extends to Ujjain, the classical capital of the Western Satrap realm. This combined with the presence of the Chastana