This Qur'an has been brought by a person who was never taught by any teacher...
This Qur'an has been brought by a person who was never taught by any teacher, who had not learnt these valuable and marvelous truths from any human being, nor had he taken this most eloquent style from any mortal. If the disbelievers thought that such a man can write such a Book, then let them bring its like from some such illiterate man.
In this light, the verse would have the same import as the following one: Say: “If Allah had desired (otherwise) I would not have recited it to you, nor would He have taught it to you; indeed I have lived a lifetime among you before it; do you not then understand?” (10:16) Both explanations have been given in some Tradition.
Obviously, this and the other challenging verses dare the antagonists to bring, if they can, like of even the shortest chapter of the Qur'an - say, the Chapter of al-Kawthar or al- Asr. A strange exegesis has been written by someone that “like it ” means like this Chapter, The Cow, in which this verse occurs. This explanation is totally devoid of good literary taste. Those who disbelieved in the Qur'an, rejected the whole Book as being forged against Allah.
What purpose could be served by challenging them to bring a Chapter like that of The Cow? Such a challenge would, in final analysis, mean this: If you are in doubt the short Chapter of al-Kawthar or al- Ikhlds, then bring a like of the largest Chapter of The Cow. Absurd, isn't it!
Miracle And Its Quiddity The claim of the Qur'an that it is a miraculous sign, and the challenge to the doubters offered by this verse, contains in reality two claims: First, that miracles, super-natural events, do occur; second, that the Qur'an is one of such miracles. If the second claim is proved, the first will automatically be proved. That is why the Qur'an has challenged the men to bring its like, as it would prove both aspects of the claim. How does a miracle happen?
After all, it is against the deep-rooted system of the cause-and-effect which is never negated. The Qur'an explains this subject in the following two stages: First: The miracle is a reality; the Qur'an is one of the miracles, which in itself proves the existence of miracles in general; it offers a challenge to its adversaries and in this way proves its truth. Second: What is the reality of miracle? How can a thing happen in this world of nature against the universal law of the cause-and-effect?