Significant Changes in the word of "Islam" and its Derivatives in the Approach of Rhetoric Comparable to Ignorant Poetry and the Quran

Stylistics is a scientific and practical method in the study and analysis of texts that tries to recognize the thoughts and inner selves of the author by recognizing the coordinates of high-frequency style and discovering their connection with the meanings institutionalized in the text. This research tries to explain the most prominent manifestations of the syntactic layer of sermon 27 and letter 28 of Nahj al-Balaghah in the context of comparative stylistics by descriptive-analytical method mixed with statistical method and tries to retrieve the differences and similarities of the stylistic coordinates of these two different literary genres and, finally, describe the style of each. By comparative study of these two texts in the syntactic layer, considerable similarities, such as the predominance of the frequency of current and short news sentences or their use almost equal to current modalities, bring the styles of the two texts closer together despite the differences in literary genres, and offer similar semantic implications to the audience. Despite these similarities, quantitative and qualitative differences in syntactic structures, such as the dramatic use of strict emphasis restrictions, the high frequency of use of denial questions, syntactic repetitions, and the predicate of sentence sections in the letter, and other differences, it has formed a different and unique texture for each of them and evoked semantic connotations appropriate to each text in an effective and convincing way in the mind of the audience.