Founded by Dantidurga around 753, the Rashtrakuta Empire ruled from its capital at Manyakheta for almost two centuries. At its peak, the Rashtrakutas ruled from the Ganges River and Yamuna River doab in the north to Cape Comorin in the south, a fruitful time of political expansion, architectural achievements and famous literary contributions.[citation needed] The early kings of this dynasty were Hindu but the later kings were strongly influenced by Jainism. Govinda III and Amoghavarsha were the most famous of the long line of able administrators produced by the dynasty. Amoghavarsha, who ruled for 64 years, was also an author and wrote Kavirajamarga, the earliest known Kannada work on poetics. Architecture reached a milestone in the Dravidian style, the finest example of which is seen in the Kailasanath Temple at Ellora. Other important contributions are the sculptures of Elephanta Caves in modern Maharashtra as well as the Kashivishvanatha temple and the Jain Narayana temple at Pattadakal in modern Karnataka, all of which are UNESCO World Heritage Sites. The Arab traveler Suleiman described the Rashtrakuta Empire as one of the four great Empires of the world. The Rashtrakuta period marked the beginning of the golden age of southern Indian mathematics. The great south Indian mathematician Mahāvīra (mathematician) lived in the Rashtrakuta Empire and his text had a huge impact on the medieval south Indian mathematicians who lived after him. The Rashtrakuta rulers also patronised men of letters, who wrote in a variety of languages from Sanskrit to the Apabhraṃśas.