The full ritual process by which one formally renounces may extend over two or more days. Following these rites it is customary for the newly initiated saṃnyasin to make his first round of begging alms (bikṣā).
Besides the normative description of the life of renunciation found in the Dharmaśāstras and their later commentaries, there exists a whole class of minor Upaniṣads, the Saṃnyāsa Upaniṣads, which extol the ideals of renunciation. Saṃnyāsins are often associated with the doctrines and practices relating to Śiva, and many saṃnyasins are members of the Daśanāmī order. See also ASCETICISM.
"Saṁnyāsa." The Concise Oxford Dictionary of World Religions. . Encyclopedia.com. (August 17, 2018). http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/samnyasa
"Saṁnyāsa." The Concise Oxford Dictionary of World Religions. . Retrieved August 17, 2018 from Encyclopedia.com: http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/samnyasa