The Qur'an has been perfectly preserved without any changes or corruptions, unlike the Bible.

The assertion that the Qur'an has remained unchanged is a common belief among Muslims, but a closer examination of Islamic historical accounts reveals significant issues regarding its compilation. The first complete text of the Qur'an was compiled during the Caliphate of Abu Bakr, after Muhammad's death, which indicates that there was no complete codex during his lifetime. This is evidenced by the account of Zaid bin Thabit, who was tasked with collecting the Qur'an due to fears that parts of it might be lost after the deaths of many who had memorized it. The very act of compiling the Qur'an into a single manuscript suggests that there were variations and that the text was not as stable as claimed. Furthermore, Zaid's own admission that he found verses with only one individual further supports the idea that the text was not uniformly preserved. Thus, the narrative of the Qur'an's flawless transmission is contradicted by its historical compilation process, which involved significant efforts to gather and verify the text posthumously.