The appearance of Mazdak and his announcement was in Kawad’s (488-531) time who at first converted to Mazdakism, but after a temporarily overthrow, abandoned Mazdak and his followers. It seems that in 528 or 529 C.E. many of Mazdakites were killed by Khosrow Anushiravan under the command of Kawad. After Mazdak his followers, known as Mazdakeans, did not lose their faith in Mazdak and his teachings so tried to spread his teachings in a hidden manner. Teachings of Mazdak, due to their similarities with some doctrines of Manichaeism, Zoroastrianism and even Zurvanism, often were ascribed to these religions. Mazdakism, on the one hand, is a dualistic religion which believes in two origins eternally different and independent and, on the other, speaks about an exalted God.