Shabir Ally:

"It doesn't matter if the Qur'anic manuscripts are corrupted, or have evolved, as long as we have a picture of the true Jesus..." (Televised Debate in Atlanta, Oct. 19, 2000)

"Arabic writing at the beginning of Islam was, therefore, not of the best quality nor of the greatest accuracy and excellence. It was not (even) of medium quality, because the Arabs possessed the savage desert attitude and were not familiar with crafts.
One may compare what happened to the orthography of the Qur'an on account of this situation. The men around Muhammad wrote the Qur'an in their own script which, was not of a firmly established, good quality. Most of the letters were in contradiction to the orthography required by persons versed in the craft of writing.... Consequently, (the Qur'anic orthography of the men around Muhammad was followed and became established, and the scholars acquainted with it have called attention to passages where (this is noticeable).
No attention should be paid in this connection with those incompetent (scholars) that (the men around Muhammad) knew well the art of writing and that the alleged discrepancies between their writing and the principles of orthography are not discrepancies, as has been alleged, but have a reason. For instance, they explain the addition of the alif in la 'adhbahannahU "I shall indeed slaughter him" as indication that the slaughtering did not take place ( lA 'adhbahannahU ). The addition of the ya in bi-ayydin "with hands (power)," they explain as an indication that the divine power is perfect. There are similar things based on nothing but purely arbitrary assumptions. The only reason that caused them to (assume such things) is their belief that (their explanations) would free the men around Muhammad from the suspicion of deficiency, in the sense that they were not able to write well. They think that good writing is perfection. Thus, they do not admit the fact that the men around Muhammad were deficient in writing." (Muqqadimah, ibn Khaldun, vol. 2, p.382).

"Lastly I must bring into relief the case of the word la ( ), which in four or five cases is only l ( ) without the final alif.The word la means no, and the word l means certainly. It is horrible to think when it is meant "the believers certainly shall assemble unto God" and "the unbelievers certainly shall assemble in the hell", and the unfortunate ignorant reader unintentionally says "not" instead of "certainly". We will point out these passages in our second list" (Orthographical Peculiarities In The Text Of The Qur'an, M. Hamidullah, Islamic Order (Karachi), Vol. 3, no. 4, 1981, p.78; article received from Islamic Foundation U.K. as per citation in Ulum al-Qur'an, p.60; emphasis added).

"Abu Amr states that he received the following revelation from Katada as-Sadusi: "When the first copy of the Qur'an was written out and presented to [the khalif] Othman Ibn Affan, he said: 'There are faults of language in it, and let the Arabs of the desert rectify them with their tongues." (Biographical Dictionary, Ibn Khallikan, p. 401)