Muhammad's perfect memory

Today in internet world I find many articles by Islamic Fanatics that Qur'an is the perfect book and is preserved by Allah. Lets see what Qur'an and Hadith says about this claim..

In Qur'an Chapter 87 verse 6-7 says:- Soon We shall make you recite Our revelations so you shall forget none of them[6] except what Allah wills. Surely He knows what is open and what is hidden.[7]

About this verse Tafsir Abbas comments:- [87:6] (We shall make thee read (O Muhammad)) We shall teach, O Muhammad, the Qur'an; it is also said this means: Gabriel shall read to you the Qur'an (so that thou shalt not forget [87:7] Save that which Allah willeth) and Allah willed that you do not forget; and the Prophet (pbuh) never forgot a bit of the Qur'an after this. (Lo! He knoweth the disclosed) He knows the works that are done and the words that are said in the open (and that which still is hidden) of secrets which you have thought about in yourself;

As per this verse, Allah claims that Muhammad will not forget a single verse,except Allah wills. Further, as per the commentary Allah willed that Muhammad do not forget..

Now, we will see Hadiths disapproves this claim in many records:-

Bukhari Volume 6.6.556: Narrated Aisha: The Prophet heard a man reciting the Qur'an in the mosque and said, "May Allah bestow His Mercy on him, as he has reminded me of such−and−such Verses of such a Surah." Its crystal clear from above Hadith that Muhammad himself accepted that he forgot the verse revealed by Gabriel to him. At that time no written Qur'an was available.

Further in the same Hadith it says:- 6.557: Narrated Hisham: (The same Hadith as 6.556, adding): which I missed (modifying the Verses).

I think Qur'an and Hadith itself refutes the claim that Qur'an is a perfect book and is preserved by Allah. There are many more authentic reports which proves that Muhammad did not had perfect memory and neither Qur'an was completely collected( documented ).

Sahih Muslim Bk 4, Number 1720: 'A'isha reported that the Apostle of Allah (may peace be upon him) heard a person reciting the Qur'an at night. Upon this he said: May Allah show mercy to him; he has reminded me of such and such a verse which I had missed in such and such a surah.

Muhammad disapproves these claims of Islamic Extremists in his own words..

In Sunan Abu Dawood Book 3, Number 1018: Narrated Mu'awiyah ibn Khudayj: One day the Apostle of Allah (peace_be_upon_him) prayed and gave the salutation while a rak'ah of the prayer remained to be offered. A man went to him and said: You forgot to offer one rak'ah of prayer. Then he returned and entered the mosque and ordered Bilal (to utter the Iqamah). He uttered the Iqamah for prayer. He then led the people in one rak'ah of prayer. I stated it to the people. They asked me: Do you know who he was? I said: No, but I can recognise him if I see him. Then the man passed by me, I said: It is he. The people said: This is Talhah ibn Ubaydullah.

Now, we can imagine how perfect book was Qur'an, the prophet of Islam himself forgot the book revealed to him. Islamist fanatics are disapproved by the Narcissist, pedophilia prophet..