Answered by: Maulana Shadman Ahmed
Assalamu Alaikum Wa Rahmatullah
Did the Prophet SAW authorized some changes or additions?
can you do a refutation regarding the Prophet SAW supposedly authorizing some changes and additions to the Holy Qur’an? Below are the ahadith (the third one is from Musnad Ahmad and it’s in Arabic) :
As one can see the ahadith are Sahih. It is claimed that the Christian man contributed to the Divine text. I’m confused as to why the Prophet SAW allowed such contribution? Doesn’t this contradict with many verses highlighting the Qur’an’s immunity from outside influence? Doesn’t this amount to tampering? How can we reconcile this with 69:44-46 of the Qur’an since this is like ascribing false sayings to Allah SWT? This event is similar to the one regarding Abdullah ibn Abi Sa’d ibn Abi Sarh but that has been confirmed to be baseless. Need help.
In The Name Of Allah, The Most-Merciful, The Most Kind
The man mentioned in the texts cited in the links you provided was a man from Banu Najjar that was from the “recorders of revelation”. That means that when the revelation was given to the Prophet SAW he would dictate to few scribe companions who would record the verse on what they could find to write on. The Prophet SAW was informed of his evil intent of leaving Islam through wahi (revelation) or ilham (inspiration). That is why in the third narration he SAW tells him to write what he wants as he knows that he is not from the ones that are guided.  [al-Fath al-Rabbani, volume 18, page 31]
Only Allah knows best
Written by Maulana Shadman Ahmed
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 انما قال له النبي صلى الله عليه وسلم اكتب كيف شئت ولم يزجره عن فعله لكونه علم إما بطريقة الوحي أو بطريق الإلهام أن هذا الرجل خبيث النية وان الله عز وجل سيعاقبه عقابا صارما وينكل به وقد كان ذلك فلما هلك لم تقبله الأرض أن يدفن فيها فنبذته مرارا حتى ترك منبوذا على وجه الأرض ليعتبر به غيره
This answer was collected from DarulIftaBirmingham.co.uk, which is run under the supervision of Mufti Mohammed Tosir Miah from the United Kingdom.