Dhutanga (Pali dhutaṅga, Sinhala: ධුතාඞ්ග) or dhūtaguṇa (Sanskrit) is a group of austerities or ascetic practices taught in Buddhism. The Theravada tradition teaches a set of thirteen dhutangas, while Mahayana Buddhist sources teach a set of twelve dhūtaguṇas.[1] The term is generally understood to be derived from the root dhu "to shake" and could mean practices which help one "shake off" the defilements.[1] Thus, the dhutangas are meant help eliminate the defilements in the mind, and thus to deepen Buddhist practice. Their aim is to help the practitioner to develop detachment with material things including the body. Dhutanga practice is not considered a necessary requirement for a monk as is Śīla (virtue).