Allowing some of the people of the Book (Jews and Christians)tonarrate the tales and narrations which were rooted in the superstitions and false illusions of the people of the Book and were often attributed to the Prophet and his Companions led to the formation ofIsraelitesin Islamic texts.Most of the Companions and Successorstrusted the narrators of Israelites without deliberating upon the principles of differentiating sound narrations from the unsound ones and consequently a considerable part of narration resources, especially those of the Sunnites, were filled withIsraelites. Following their entrance into the books and interpretations of narrations, these traditions remained in some resources and some otherresources were cleared from such traditions. Since the messianic belief in Islam is based upon the narrations from the Prophet (p.b.u.h.) and the Imams (a.s.), using this proper ideological context,some people made some narrations in the field of messianism and brought some Israeli concepts into sound hadithresources. This article seeks to explore the origins of the infiltration ofIsraelites into messianic narrations and the most significant related issuesseen in thebooks of hadith.