This study employs a descriptive-analytical method to emphasize the genuineness and importance of peaceful coexistence values among religions and cultures in Islamic civilization. It specifically focuses on the interaction with others, living together, acknowledging, respecting, and collaborating with them in different aspects of shared humanity. This research examines the language of extremism by studying and analyzing it, seeing it as the primary obstacle to the principles of civic coexistence and tolerance. The research findings indicate that the key factor that sets apart the principles of peaceful coexistence among individuals, irrespective of their religious and racial backgrounds, and that necessitates the acceptance of others in Islamic ideology, is the perception of such acceptance as legitimate obligations. An individual is recognized as a Muslim only when they openly acknowledge their adherence to the Islamic faith. Through the analysis of holy writings and the Prophet's biography, the researcher concludes that any radical and divisive rhetoric that promotes the rejection of peaceful coexistence cannot be regarded as Islamic speech, and does not accurately reflect Islam and Muslims. Instead, it is an extreme rhetoric that only represents its advocates, a rhetoric that Islam disavows, just as it disavows other forms of hate speech. The research urges the official religious authorities in Arab and Islamic countries to take on the legitimate, ethical, and scientific duty of freeing religious matters from ideological manipulation and restoring the correct approach to interpreting religious texts, while avoiding extremist ideological exploitation. This proposal advocates for the promotion of harmony, resolution of misunderstandings, fostering love and unity, prevention of excommunication, defamation, and conflict. It suggests the establishment of educational programs focused on promoting peace and coexistence values, as well as encouraging research in the field of tolerance education and acceptance of others. The objective is to cultivate an intellectual atmosphere in our universities that prioritizes wisdom, reason, logic, and evidence over emotional slogans. This will result in universities producing graduates who possess values of tolerance and coexistence, equipped to challenge and dismantle hateful and extremist ideologies by exposing their flaws and removing the religious facade from their harmful ideas.