In all human civilizations, there is the concept of prejudice, which is one of the requirements for the survival of a civilization. In this article, the aim is to examine the prejudice in the tribal structure of the Arabs. Prejudice is one of the characteristics of the pre-Islamic Arabs that existed structurally among the Arabs even after Islam. This prejudice, which was very evident among the pre-Islamic Arabs, played an important role not only among the post-Islamic Arabs but also in the events of the Islamic realm. Including in the incident of Saqifah Bani Saadeh and the Arab policies of the Umayyads. In this article, using the second and third hand sources, the role of prejudice in the events of the Islamic Caliphate has been investigated.