Sannyasa

According to Narada Purana, there are six stages of Sannyas.

1. Kutirchak – Who dwells in a hut, practically one who practices his or her own sadhana and studies according to his or her own rhythm.
2. Bahudak – Who visits many teachers, learns their ways, employs their knowledge, and explores how to integrate various teachings into his or her own discipline.
3. Hamsa – Who employs discrimination in discerning what practices fit into his or her own life style. 
4. Paramahamsa – Who has supreme discrimination, and whose life style is always an inspiration to others.
5. Turyatita – Who has moved beyond the bonds of karma and is fixed in stillness.
6. Avadhuta – Who is centered in Oneness, whether sitting in samadhi or acting in the world, his or her own center is never compromised.

Source

http://8nar.blogspot.com/search/label/Puran