While Muhammad was still alive, he would give recitations that cancelled previous ones. In other words, he would tell his followers that certain portions of the Quran he had relayed before were no longer to be recited as part of the Quran. This was met with resistance, as people asked him how the Word of God could be cancelled. The response is recorded in 2.106 of the Quran, which asserts that Allah can substitute verses in his divine scripture because “he has power over all things.”
