Experts working in various fields of social sciences define Ibn Khaldun as a sociologist, economist, and jurist. However, a feature that has been highlighted is that of historian. Here are his two important studies: Muqaddimah and Kitab al Ibar. The fact that Ibn Khaldun's Muqaddimah is a historiographical and historical philosophical work, as well as the fact that Kitab al Ibar has got a historical feature, emphasize that Ibn Khaldun is a historian. Ibn Khaldun revealed the basics of history with a very advanced understanding compared to his time in Muqaddimah. He shared his views on historiography under the titles of separate titles. He criticized some historians who had lived before him, due to their lack of methods. In fact, Muqaddima is the theoretical and Kitab al Ibar is the application example of the historiography of Ibn Khaldun. It is very important to observe how much he practices the principles he has set out in his history book. The purpose of this work is to see whether Ibn Khaldun who, according to his own time has put forth the most advanced levels of historiography, applies them in his own written book. The author does not have a separate Sirah book. That is why we have to evaluate Ibn Khaldun's narration and writing of Sirah in his historiography. Moreover, when we look at the issues of Kitab al Ibar that deal with the Jahiliyyah and the Four Caliphs periods, we can see that these issues are handled very briefly and that the style in the Sirah section is also used there. This shows that Ibn Khaldun's writing of Sirah is part of his historiography. We will especially make comparisons in the investigation we are going to carry out. Our method is based on comparing Ibn Khaldun's method in the Sirah section, the use of resources, criticism, interpretation, and section content and comparing them with the historiography written in Muqaddimah. Ibn Khaldun preferred a very brief method of expression. For this reason, in his work he did not mention many subjects that are important for the Sirah. Events that are disconnected from each other are flowing in succession. He has not explicitly stated what sources he used. He used narrations but he did not mention where he got them. He mentioned sources he used in few narrations. These sources are names that he uses when he states that he is trusting such people as Ibn Ishaq, Vaqidi, Bukhari, Tabari. Sometimes he did not tell the story and sent the reader directly to the source. Although there are not many numbers, various expressions show that the author criticizes and prefers the news he reads according to the methods he adopts. However, the number of stories that are clearly criticized is two. According to Ibn Khaldun, the fact that a report is included in trustworthy sources is sufficient to verify its correctness. The author has interpreted various forms in the Sirah section of Kitab al Ibar, but their number is small. When we look at the issues handled by Ibn Khaldun in the Siyer section, it is generally observed that the processes of Islam's notification, political issues, wars and delegations are predominantly involved. We can see that the Prophet's private life and the steps taken for the construction of the new society in Medina are not emphasized. The point about which Ibn Khaldun criticized some of the historians in the Muqadaddimah is that they should have handled issues succinctly and should not have included details. However, it can be seen that the al Iber's sections assigned to Siyer also carry these features, that many traditions are not included, and that a significant portion is referred to by a few sentences. He has chosen from among the general Sirah topics the topics discussed in this section. However, the principles on which this choice is based are unclear. Ibn Khaldun has often not mentioned the sources he uses. We observe that the author does not reveal the reasons for preferring the narratives in the news he conveyed. In Muqaddimah, Ibn Khaldun lay emphasis on the critique of the news and stated that he saw it as the essence of history. Ibn Khaldun commented on the Siyer section, but by considering the basics of the historiography he published in Muqaddimah, we see that his interpretations are rather limited. Ibn Khaldun commented on the Sirah section, but when it is considered the essence of the historiography he had put forth in Mukaddime, we can see that his interpretations are rather limited. These characteristics of the Sirah indicate that he did not obey the point that historians criticized in Muqaddimah. [ABSTRACT FROM AUTHOR]