Haji Bektash Veli or Ḥājī Baktāsh Walī ( Ḥājī Baktāš Walī; ) was an Alevi Muslim mystic, Sayyid, humanist and philosopher, who lived from 1209 to 1271. who lived and taught from approximately 1209 to 1271 in Anatolia. He is revered among Alevis for an Islamic understanding that is esoteric (spiritual), rational, progressive and humanistic. Alevi and Bektashi Muslims believe the path of Haji Bektash is the path of Ali ibn Abu Talib, since Ali was the source of Bektash's teachings. His original name was "Sayyeed Muhammad ibn Sayyeed Ebrāheem Ātā", was one of the figures who flourished in the Sultanate of Rum and had an important influence on the Turkoman nomads of Asia Minor. He is also referred to as the Sultan of Hearts and the Derwish of the Derwishes. Haji Bektash Veli was a descendant of the 7th Shi'a Imam Musa Kazim.