What do the Kutub refer to in Islam?

The term "Kutub" refers to the holy books in Islam, which are considered divinely revealed texts that guide the faith and practices of Muslims. The foundational texts, primarily the Qur'an, are regarded as the literal word of God as revealed to the Prophet Muhammad. Alongside the Qur'an, other significant scriptures recognized in Islamic tradition include the Torah (Tawrat), Psalms (Zabur), and Gospel (Injil), each associated with different prophets sent to guide humanity.

Understanding this term within the broader context of Islamic belief is essential. The other concepts presented in the options—such as divine justice, belief in prophets, and the belief in one God—are central tenets of Islamic faith but do not specifically pertain to the classification or the notion of "Kutub." This distinction highlights that "Kutub" is explicitly focused on the written texts that serve as the scripture of Islam, setting it apart from general beliefs of faith or theology.