What role does the mujaddid play in Islamic apocalyptic tradition?

In Islamic tradition, the mujaddid is a divinely inspired reformer believed to appear at the turn of every century of the Muslim calendar to restore the community to its original purity.12

While distinct from the mahdi—the final eschatological restorer—the mujaddid tradition is closely linked to apocalyptic messianism. The return of the mujaddid is viewed as a cyclic event, and historically, the end of each century has often seen the emergence of powerful religious movements characterized by strong apocalyptic tendencies.12

These cyclic episodes are regarded as revitalization movements intended to renew religious commitment. However, in instances where belief in a mujaddid has been prominent, such as with al-Ma’mun, al-Hakim, Akbar, or the Mahdi of the Sudan, the figures involved often exhibited clear millennial and messianic expectations. Thus, the mujaddid serves as a catalyst for periods of intense religious ferment, bridging the gap between routine renewal and the broader apocalyptic anticipation of the Endtime.12