"He now undertook what were described as 'dharma yatras' instead of the usual royal 'vihara yatras'. Vihara yatras were marked by pleasures such as the hunt" in Nayanjot Lahiri (2015). Ashoka in Ancient India. Harvard University Press. pp. 181–183. ISBN978-0-674-91525-1.
Dutt, Sukumar (1962). Buddhist Monks And Monasteries Of India: Their History And Contribution To Indian Culture. London: George Allen and Unwin Ltd. pp. 352–353. OCLC372316.