To what extent are the hadiths attributed to Lady Aisha—may God be pleased with her—regarding the omission and alteration of Quranic verses authentic, and how can one respond to those who use these dubious claims to impugn the preservation of the Quran?

The Qur’an is preserved by Allah’s preservation, as He says: “Indeed, it is We who sent down the Dhikr (the Qur’an), and indeed, We will be its guardian.” Uthman did not delete anything from the Qur’an; rather, he united the people upon a single mushaf (definition) with the approval of the Companions. Please send the hadiths and the words of the exegetes to clarify any ambiguity.