Islam confirms the earlier Scriptures, including the Mosaic Law, and therefore is a continuation of God's covenant with Abraham.

The Quran asserts that it confirms the previous Scriptures, including the Torah, which contains specific commandments given to the descendants of Abraham. One of the most notable commandments is the requirement for male circumcision on the eighth day, as outlined in Genesis and Leviticus. This practice is a sign of the covenant between God and Abraham, emphasizing the importance of adhering to divine instructions. However, the Quran lacks any explicit command regarding circumcision, particularly on the eighth day, which raises concerns about the authenticity of the claim that Islam is a continuation of the Abrahamic faith. Furthermore, Islamic traditions present varying opinions on when circumcision should occur, and some even endorse practices such as female circumcision, which contradicts the moral and ethical teachings found in the Torah. This inconsistency suggests a significant departure from the original covenant established with Abraham and his descendants. If Muhammad is indeed a descendant of Ishmael, as claimed by Muslims, then the absence of a clear directive in the Quran regarding circumcision undermines the legitimacy of this claim. In light of these discrepancies, it is crucial to evaluate the foundations of Islamic law in comparison to the Mosaic Law. The lack of alignment on such a fundamental practice as circumcision calls into question the assertion that Islam is a direct continuation of the covenant established by God with Abraham and his lineage. Thus, the argument for the legitimacy of Islam based on its supposed confirmation of earlier Scriptures is not as robust as claimed.