Do not the hadiths mentioned in Sunan Ibn Majah (1934) and Musnad Ahmad (20260) indicate a deficiency in the Holy Qur’an?

The answer concerning the hadith mentioned in Sunan Ibn Majah is detailed in Fatwa No. 36228. As for the hadith in Musnad Imam Ahmad, it is narrated from Ubayy ibn Ka'b who said: "How much of Surat Al-Ahzab do you recite?" He replied: "Seventy-something verses." Ubayy then said: "Indeed, I recited it with the Messenger of Allah, peace and blessings be upon him, as much as Surat Al-Baqarah or more. And it contained the verse of stoning." Imam Al-Qurtubi mentioned in his tafsir that Surat Al-Ahzab used to be equivalent to Surat Al-Baqarah, and that it contained the verse of stoning: "The married man and the married woman, if they commit adultery, stone them definitively as a deterrent from Allah, and Allah is Almighty, All-Wise." This means that Allah Almighty removed from Al-Ahzab more than what we possess, and that the wording of the stoning verse was abrogated. And Aisha said: "Surat Al-Ahzab used to be equivalent to two hundred verses, but when the Mushaf was written, only what it is now was recorded." So, what was removed from this surah is considered abrogated. And the Qur'an is free from deficiency and error, because Allah has undertaken to preserve it, as He said: "Indeed, it is We who sent down the Dhikr (the Qur'an), and indeed, We will be its guardian," and He said: "And indeed, it is a glorious Book. Falsehood cannot approach it from before it or from behind it, sent down from One Wise and Praiseworthy."