Ancient Iranian religion was strongly connected. Beginning in the early 10th-century BC, the ancient Iranian religion was gradually displaced by Zoroastrianism, which contains many essential aspects of its predecessor. The sources on ancient Iranian religion, though limited, consist of textual and material sources. The textual sources are both Iranian and non-Iranian. An important Iranian source is the Avesta, which are Zoroastrian sacred scriptures made in the Avestan. This is considered the principal source of knowledge on ancient Iranian religions. It is a collection of several texts that seems to have been over a large span of time by a variety of authors. These
The Book of Mirdad Ameen Rihani's "The Book of Khalid", with the book being believed to have had an influence on Na'ima's writings. Na'ima has described the work as the "pinnacle of his thought and a summary of his view of life". The Book of Mirdad The Book of Mirdad is an allegorical book of philosophy by Lebanese author Mikha'il Na'ima. The book was first published in Lebanon in 1948 and was initially written in English, with Na'ima later translating it into Arabic. Na'ima initially sought to have the book published in London, where it was rejected for "[advancing] a religion with 'a new