served as the basis for 2 popular folk songs Ovanige and Onakevadu, which were sung either while pounding corn or to entice wild elephants into a pit ("Ovam"). The Chandraprabha-purana by Sri Vijaya, a court poet of emperor Amoghavarsha I, is ascribed to the early 9th century. His writing has been mentioned by Vijayanagara poets Mangarasa III and Doddiah (also spelt Doddayya, c. 1550 AD) and praised by Durgasimha (c. 1025 AD). During the 9th century period, the Digambara Jain poet Asaga (or Asoka) authored, among other writings, "Karnata Kumarasambhava Kavya" and "Varadamana Charitra". His works have been praised by later poets, although none of his works are available today. "Gunagankiyam", the earliest known prosody in Kannada, was referenced in a Tamil work dated to 10th century or earlier ("Yapparungalakkarigai" by Amritasagara). Gunanandi, an expert in logic, Kannada grammar and prose, flourished in the 9th century AD. Around 900 AD, Gunavarma I wrote "Sudraka" and "Harivamsa" (also known as "Neminatha Purana"). In "Sudraka" he compared his patron, Ganga king Ereganga Neetimarga II (c. 907-921 AD), to a noted king called Sudraka. Jinachandra, who is referred to by Sri Ponna (c. 950 AD) as the author of "Pujyapada Charita", had earned the honorific "modern Samantha Bhadra". Tamil Buddhist commentators of the 10th century AD (in the commentary on Neminatham, a Tamil grammatical work) make references that show that Kannada literature must have flourished as early as the BC 4th century. Around the beginning of the 9th century, Old Kannada was spoken from Kaveri to Godavari. The Kannada spoken between the rivers Varada and Malaprabha was the pure well of Kannada undefiled. The late classical period gave birth to several genres of Kannada literature, with new forms of composition coming into use, including Ragale (a form of blank verse) and meters like Sangatya and Shatpadi. The works of this period are based on Jain and Hindu principles. Two of the early writers of this period are Harihara and Raghavanka, trailblazers in their own right. Harihara established the Ragale form of composition while Raghavanka popularised the Shatpadi (six-lined stanza) meter. A famous Jaina writer of the same period is Janna, who expressed Jain religious teachings through his works. The Vachana Sahitya tradition of the 12th century is purely native and unique in world literature, and the sum of contributions by all sections of society. Vachanas were pithy poems on that period's social, religious