Sanyasa, sometimes spelled Sannyasa or Sanyasi, is life of renunciation and the fourth stage within the Hindu system of four life stages known as Ashramas, with the first three being Brahmacharya, Grihastha and Vanaprastha.
In Bhagavad Gita 18.2 says that - Leaving material desired activities is what great men call renounced life or sanyasa. Giving up the results of the action...