The jurisprudential and branch dispute is an essential matter in the doctrines and laws, the eyes of the mujtahids may differ in the branches of jurisprudence. The sayings of the recognized schools of jurisprudence. The study answered some questions, including the foundations of the jurisprudential dispute between the two imams, and the impact of this dispute on the jurisprudence of marriage. The importance of this section, the need of Muslims for it, and its impact on reforming the individual, family and society is not hidden; And because it contains many issues that need clarification and clarification, and and the discussion of .many fatwas that many people do not know jurisprudential issues has shown the richness of Ibadhi jurisprudence, and its agreement with many of the views and positions of the imams of other Islamic sects. The study dealt with some of the original issues in the chapter on marriage, and the jurisprudential dispute based on it, through the writings of the two imams. The study concluded with recommendations, including: the need for research centers to pay attention to the Omani manuscript heritage, and to bring it to light, especially with regard to distinguished scholars such as Al-Sayegh and Al-Salmi, may God Almighty have mercy on them. Fiqh academies should make extensive studies on the jurisprudence of the family and its contemporary issues, as well as pay attention to the jurisprudence of contemporary calamities in the chapter on marriage, and related rulings, taking into account the jurisprudence of reality, custom and custom. This jurisprudence universities and religious institutes.