 According to Padmanabh Jaini, a professor of Indic studies, in Jainism and Buddhism, the Adi Purana text states "there is only one "jati" called "manusyajati" or the human caste, but divisions arise on account of their different professions".The caste of Kshatriya arose, according to Jainism texts, when Rishabha procured weapons to serve the society and assumed the powers of a king, while Vaishya and Shudra castes arose from different means of livelihood they specialised in.Scholars have tried to locate historical evidence for the existence and nature of "varna" and "jati" in documents and inscriptions of medieval India.