The research at its core deals with the issue of the concept of title and the trends of fundamentalist scholars in its authenticity after the settlement of the subject of dispute and with elaboration on the conditions of applying it, and highlighting its presence in the applications and jurisprudential branches in Ibadhi jurisprudence, through careful tracking and scientific analysis of those applications to highlight the trends of fundamentalists of scholars of the doctrine in adopting it or not, with discussing their evidence and weighing them, to arrive at a settled conclusion in the issue of the authenticity of this concept and the extent of its impact on the rulings of the branches in the doctrine. The study was concerned with answering the following questions: What is meant by the concept of title among the fundamentalists?, what is the dispute with it?, what do scholars say about the authenticity of the concept of the title?, what are the conditions for applying the concept of title?, what are the evidences for each team?, what are the discussions and objections to it?, what is the most correct of them?, what are the jurisprudential applications on the concept of the title in the books of Ibadhi jurists?, what is the extent of the impact of the jurisprudential branching on the authenticity of the concept of the title?, to what extent do the jurists agree to their fundamentals in adopting it or not, and what is the relation of the concept of title with legislative rules ? In general, the study concluded that what is meant by the concept of the title is attaching the ruling to the name of one of the names of the subjects, and as for its authenticity, The most correct opinion is of the majority and that is due to the strength of its evidence and due to the weakness of what the sayers relied on. Those who say that, have laid down conditions for applying it which do not, in their entirety, deviate from the conditions for adopting the concept of disagreement in the majority. Furthermore, from the analysis of the jurisprudence applications, it became clear the invalidity of applying the concept of the title in any of them, because they did not meet the conditions of applying it. It was also shown that the branches of jurisprudence were affected by the adoption of this concept due to its conflict with the legislative logic and the restriction on branches in dealing with it, which may block the door of ijtihad. Moreover, the consensus of the jurists in taking their fundamentals into its authenticity appeared, and the inverse relation was evident between the introduction of the concept of title and between the principles of justice and the rules of ease in Islam.