The Legacy of Izhar al-Haqq in Islamic Apologetics

The impact of Izhar al-Haqq on the tradition of Islamic apologetics has been profound and lasting. When it was first composed in the 1860s, it circulated among Indian Muslim scholars who recognized immediately that al-Kairanawi had produced something qualitatively different from earlier Islamic refutations of Christianity. Previous works, including the classical Arabic polemical texts, had relied primarily on rational arguments and Quranic evidence. Al-Kairanawi added a third element: the systematic use of Western historical-critical scholarship to demonstrate internal problems within the Christian tradition. This three-pronged approach proved enormously effective, and the work was quickly recognized as the most comprehensive Islamic engagement with Christianity produced in modern times.

The Arabic translation of the work, prepared by al-Kairanawi's student, brought it to the attention of the broader Arabic-speaking Muslim world, where it had significant impact on Egyptian, Syrian, and other Arab scholars who were themselves dealing with Christian missionary activity. The work was subsequently translated into Turkish, Persian, Malay, and eventually English, extending its reach across the entire global Muslim community. In each context it was received as a definitive reference work for Muslims seeking to understand and respond to Christian claims, and it continues to be cited and reprinted in the twenty-first century. Its influence on subsequent works of Islamic comparative religion and apologetics has been extensive: virtually every major Islamic treatment of Christianity in the modern era shows the influence of al-Kairanawi's method, if not always direct citation of his work.

Christian scholars who have engaged with Izhar al-Haqq have generally acknowledged its seriousness while contesting many of its specific arguments. Pfander himself was sufficiently troubled by the Agra debate to revise his Mizan al-Haqq in response to the arguments al-Kairanawi deployed, acknowledging some of the textual problems that had been raised. Later Christian scholars of Islam and Islamic-Christian dialogue, including W. Montgomery Watt and others, have engaged with al-Kairanawi's arguments about Biblical textual transmission, generally accepting that the contrast he drew between Quranic and Biblical transmission is real, while arguing that it does not have the theological implications he claimed. The work thus succeeded in its primary purpose of establishing the terms of the debate rather than allowing the missionary agenda to control the conversation.

From an Islamic perspective, the legacy of Izhar al-Haqq lies not only in its specific arguments but in its model of engagement. Al-Kairanawi demonstrated that Islamic scholars could engage with Western scholarship on its own terms without surrendering Islamic theological commitments, that confidence in the truth of Islam does not require ignorance of other traditions' self-understanding, and that taking an opponent's arguments seriously is both more respectful and more effective than dismissing them without engagement. This model has been influential in the work of subsequent generations of Muslim scholars and apologists, who have continued the tradition of rigorous, evidence-based Islamic engagement with Christianity and other traditions. Rahmatullah al-Kairanawi himself spent his later years in Mecca, where he founded a madrasa and taught until his death in 1891, leaving behind both this landmark work and a generation of students who carried his approach forward into the twentieth century.