The subject of criticizing hadiths relates to studying the chains of narration (sanad) and their texts collectively. Therefore, all hadiths, in their entirety, with their chains and texts, are eligible for critical examination. One of these subjects is the biography and military expeditions (Maghazi), which interests scholars throughout history due to its distinctive nature compared to other subjects. This study aims to highlight the methodologies of critiquing biographical narratives by comparing the books of Nur al- Din al-Halabi and Akram Diya al-'Umari, and elucidating the significant factors influencing the development of their critique methodologies. Subsequently, scientific guidelines for dealing with biographical narratives based on these methodologies are derived. The research problem arises from the personal inclinations of these two scholars in addressing issues related to the Prophet's biography, which resulted in differences in their critique methodologies of biographical narratives. The researcher follows four methodologies: inductive, analytical, comparative, and critical. In the first part, the researcher comprehends the introductory issues of critiquing biographical narratives, including their concept, history, scholars' contributions, and the personalities of Nur al-Din al-Halabi and Akram Diya al-'Umari to highlight their contributions to critiquing biographical narratives. In the second part, the researcher endeavors to analyze their methodologies in critiquing biographical narratives through their books, "al-Sirah al-Halabiyyah" and "al-Sirah al-Nabawiyyah al-Sahihah," and extract the similarities and differences in their critique methodologies, followed by identifying the influencing factors in the development of critique methodologies of biographical narratives. Finally, the researcher establishes scientific guidelines for dealing with Prophetic biographical narratives and explains their practical implementation. One of the key findings of the researcher is that al-Halabi's methodology is influenced by factors such as Sufism, the Shafi'i school of thought, and his Arab background, while al-'Umari's methodology is influenced by his background as a historian and his application of the methodologies of Hadith scholars. This divergence in their critique methodologies of biographical narratives leads to the formulation of specific guidelines for dealing with biographical narratives.