the chronology of Dattatreya are older than the Mahabharata, but Rigopoulos disagrees with him on the chronology. In the Hindu tradition, Dattatreya is the author of Avadhuta Gita, or the "Song of the free". The text's poetry is based on the principles of Advaita Vedanta, one of the subschools of Hindu philosophy. The extant manuscripts have been dated to approximately the 9th or 10th century, but it may have existed earlier as part of an oral tradition. It consists of 289 shlokas (metered verses), divided into eight chapters. P.P. Vasudevanand Saraswati Tembe Swami Maharaj has written an extensive literature on Lord Dattatreya and his incarnations including Sripada Srivallabha of Pithapur, Andhra Pradesh and Shri Nrusimhsaraswati Swami Maharaj of Ganagapur, Karnataka. The literature mainly includes Stotras-Hymns that praise lord Dattatreya and various deities, books on Lord Dattatreya. Dattatreya traditions Several Hindu monastic and yoga traditions are linked to Dattatreya: Nath sampradaya: The Nath yogis, that metamorphosed into a warrior ascetic group, consider Dattatreya as their theological founder. This group grew and became particularly prominent during the Islamic invasions and Hindu-Muslim wars in South Asia, from about the 14th to 18th century, although the Dattatreya roots of the peaceful Nath yogis go back to about the 10th century. The group was most active in Rajasthan, Gujarat, Maharashtra, Madhya Pradesh, Uttar Pradesh and Nepal. The tradition believes that the legendary Nath sampradaya yogi and Hatha Yoga innovator Gorakshanath was inspired and shaped by Dattatreya. Regional efforts and texts of the Nath tradition such as Yogi sampradaya vishkriti discussed Dattatreya. Avadhuta sampradaya: The nine Narayanas of the Avadhuta sampradaya are attributed to Dattatreya, an idea also found in the Natha sampradaya. A panth started by Pantmaharaj Balekundrikar of Balekundri near Belgavi is related to this. Also a saint named Shri Prabhakar Keshavrao motiwale follows the same path from years, and also Datt sampradaya is followed in his ashram located at kanadia, indore (Madhya Pradesh) Dasanami sampradaya and Shakti pithas: Dattatreya is revered in Dasanami and goddess-oriented Shaktism traditions. Bhakti traditions: Dattatetreya's theology emphasizing simple life, kindness to all, questioning the status quo, self pursuit of knowledge and seeking spiritual meaning of life appealed to Bhakti sant-poets of Hinduism such as Tukaram and Eknath, during an era of political and social upheavel caused by Islamic invasion in the Deccan region of India. They reverentially mentioned Dattatreya in their poems. The use of his symbolism was