In this pivotal work, Samaeel Al-Rubaie explores the profound societal transformation of the Arabs with the emergence of Islam. The book meticulously analyzes the shift from a deeply rooted tribal system, centered on kinship and lineage, to a new community unified by a religious creed. Al-Rubaie investigates the pre-Islamic social structures, the challenges of this transition, and how Islamic principles reshaped identity, governance, and social cohesion, providing a critical study of this foundational period in Arab history.