Comparison of the structure and content of the introduction to the story of Bijan and Manijeh with the introduction of Rostam and Esfandiar in the Shahnameh

In this article, the differences and structural and content similarities of the introductions of Bijan, Manijeh, Rostam and Esfandiar in Ferdowsi's Shahnameh are examined.Despite the difference between the war-tragedy story of Rostam and Esfandiar with the love story of Bijan and Manijeh; Why did Ferdowsi use some words, combinations and concepts in the introduction of these stories in a similar and close way?The coincidence or purposefulness of these subscriptions; A special look at Ferdowsi's style and interest in the themes and topics used in the revenues of these two stories and also the achievement of several prominent reasons about the permanence of the verses of these fictional introductions are among the hypotheses raised in this research.The method of fundamental analysis and quantitative and qualitative comparison with the help of available library resources has been tried to analyze the various dimensions of the subject. After the introduction and general work and statement of the problem and research background, a separate analysis and review of each introduction is given.The differences and similarities of these two introductions are stated. At the end of the discussion, while answering the proposed problems and hypotheses, we find out:Ferdowsi probably for some reasons such as motivating and attracting the audience, content independence in fictional incomes and novelty and avoidance of obsolescence at any point in time, has tried to compose the introduction of Shahnameh with considerable commonalities.