Authenticity of the Qur'an and Its Preservation Perspective Q.S Al Hijr: 9

The authenticity of the Qur’an is a fundamental belief in Islam, that this holy book has been preserved from alteration since it was revealed to the Prophet Muhammad until the end of time. However, history records polemics related to differences in the companions’ manuscripts and criticisms from orientalists who questioned its authenticity. This article aims to reaffirm the authenticity of the Qur’an based on the interpretation of Q.S. Al-Hijr: 9. This research uses a library research method by reviewing classical and contemporary literature, both tafsir, hadith, and modern scientific works. The results of the study show that the authenticity of the Qur’an is not only theologically guaranteed by Allah, but is also historically proven through the tradition of Uthmani codification and the continuity of the memorization of the huffaz. In addition, Muslims have a great responsibility in maintaining the authenticity of the Qur’an through recitation, memorization, tadabbur, and the implementation of its teachings in everyday life.