This research aims to identify the opinions of Imam Al-Qurtubi in the biography of the Prophet, as well as the formulas, methods, and aspects of weighting that he used during his weighting between the sayings through his interpretation, which brings together the provisions of the Quran and clarifies what it contains of the Sunnah and any criterion, since Al-Qurtubi did not mention the opinions contained in the interpretation. Not only the verses related to the Prophets biography, but he resorted to weighing between them, relying in doing so on evidence that supports what he argued. In this work, Al-Qurtubi relied on many methods and means known to commentators, including: Stating the more likely statement, or explaining it with a statement while stating the weakness of another, or following the more likely statement with a phrase indicating its weakness, or stating the more likely statement in the form of assertion and mentioning the rest of the sayings in the nursing form. Al-Qurtubi has many ways of judging between opinions, including: preferring based on Quranic counterparts, preferring based on the apparent meaning of the Quran, preferring based on the noble Prophets hadith, preferring based on the Quranic context, preferring based on the reasons for the revelation, and preferring based on the sayings of the Companions and others.