The impact of speech on the listener's soul and the creation of specific changes in his inner being is one of the criteria by which the beauty of speech is also measured. Early and late rhetoricians have pointedly and explicitly discussed this criterion for measuring the beauty of words. According to friends and enemies, Amir al-Mu'minin, peace be upon him, is one of the great talkers of history. His words, in addition to the realm of thought, have also affected the inner realms of the audience. This research has been organized with the library method and by searching historical, literary, and hadith sources to investigate what effect the words of Amir al-Mu'minin, particularly those collected in Nahj al-Balaghah, have on the lives of the audience. By analyzing the data and categorizing the audiences who were influenced by the words of Imam, it was concluded that in terms of the effective aesthetic, the words of Amir al-Mu'minin (PBUH) are at their peak because they can influence both the indirect and direct audiences, even if they have not sufficient inner preparatio.
