In this study, the prominent features of two dar al-hadith that emerged alongside the development of hadith in Mosul, a region known as the "Jazira region" situated on the banks of the Tigris River, which is referred to as a "crossroads" and is located between Syria, Egypt, and the Khorasan region, and which has been the center of construction of numerous madrasas and the education of scholars, have been examined. İn the age of Omer, with the conquest as well the sahabi who arrived to the area and the soldiers who collect the hadith the hadith moving was succeed in the initial stages, hadith education began in mosques and prayer areas, later expanding to independent locations. Mosul, a city that played a central role in the collection of hadith and the provision of hadith education, was situated within the Jazira region on the banks of the Tigris River. This region, often described as a "crossroads," was located between Syria, Egypt, and the Khorasan region. Major centers for hadith transmission and education were established in Damascus, Cairo, Baghdad, and Kufa. Students embarking on their hadith journeys would inevitably visit Mosul, benefiting from the presence of hadith circles and scholars in the city. The process of hadith development, which began with its conquest, deepened through interactions with other centers of hadith scholarship. With the establishment of Baghdad by the Abbasids, some scholars from Basra, Kufa, and Mosul moved to the capital, while others returned to Mosul following the city's occupation by the Mongols. In Mosul, particularly noteworthy for thematic education in hadith, two institutions stood out: Dar al-Hadith al-Muhajiriyya and Dar al-Hadith al-Muzaffariyya. This research aims to identify these two dar al-hadith institutions, their teachers, students, and the books taught, within the context of the emerging hadith development process. Considering the common state support during the construction of Dar al-hadith institutions, the fact that Dar al-Hadith al-Muhajiriyya was sponsored by the Arbil Atabegs and Dar al-Hadith al-Muzaffariyya by the prominent Sons al-Muhajiriyya family signifies a resemblance to the broader Islamic geography in terms of dar al-hadith construction. Numerous students and scholars were associated with both dar al-hadith institutions, and through this research, sources related to the hadith aspect of Mosul were examined. Similarities in the hadith development processes, institutions, and practices of other cities in Islamic scholarship were briefly compared. No research has been conducted on dar al-hadith institutions in Mosul's hadith development process in our country or the Arab world, as far as our investigation indicates. Therefore, it is considered important for this study to contribute to the field. As a result of the study, it is evident that although Mosul did not reach the level of other centers of learning, it made progress in terms of hadith development. It produced scholars such as Abu Ya'la al-Mawsili, Ibn al-Asir, Omar Ibn Badr al-Mawsili, Ibn al-Salah, and Abdullah ibn Mahmud al-Mawsili, who excelled in hadith studies. The city had two thematic dar al-hadith institutions and 18 hadith centers alongside its madrasas. While not as extensive as other centers, Mosul's hadith education involved approximately 232 scholars who engaged in both travel-based and local learning. The field of hadith literature also witnessed significant contributions, particularly in the areas of classification, compilation, unique hadiths, and the methodology of hadith. * This study has been prepared by Abdulmawjood Abdulfattah Qarabash, based on the master's thesis titled “The Science of Hadith in Mosul and The Hadithism of Omar b. Badr al-Mawsili al-Hanafi” prepared at Eskişehir Osmangazi University Social Sciences Institute.