 This has often been labeled as pantheism, although it is a concept closer to panentheism.Bektashism is also heavily permeated with Shiite concepts, such as the marked veneration of Ali, The Twelve Imams, and the ritual commemoration of Ashurah marking the Battle of Karbala.The old Persian holiday of Nowruz is celebrated by Bektashis as Imam Ali's birthday.