The other objection was that they demanded of him an objective miracle
And the next part of the aya replied to their objection:
Quran 2: 40
, which means:
(And it was never the part of any messenger to bring a miracle [of His own accord, and he could not do that] except as God permitted
For every period was a book.
In addition, they are ignorant about the consequences of the miracles, which they demand of you. But God is All-Knowing about the consequences of affairs and is All-Knowing about the miracle suitable to every generation, and to the messenger who brings it, and to the nation to whom he is sent, and He is All-Knowing about the book suitable to that time, and statements included in that book suitable to the time of that generation.
It means: Except the miracle which God gave to him, he would bring it to his people and he could not bring anyone else.
E.g. if Pharaoh said to Moses: “I don’t accept this staff from you, which you cast on the ground to become a serpent, but I will give you another staff, which you may cast on the ground to become a serpent,” then if Moses cast it on the ground, it would not be a serpent.
As such, every prophet has his special miracle from God, which he cannot bring anyone else of his own accord, but only according to God’s permission.
Moreover, each nation has its suitable miracle, on account of the different time, languages, doctrines and knowledge acquired by that nation; so this is the meaning of (For every period was a book.)
It means: To each time is a special kind of miracles which suit that time, a book suiting that period of time, the religious statements included in that book which suited the generation of that time, and a messenger or apostle proper for that particular nation.
Therefore, the staff [of Moses] suited the time of Pharaoh, because the magic was prevalent with them, so Moses brought the staff and invalidated their magic.
The reviving of the dead suited the time of Jesus, because medicine was prevalent with them, and physicians were unable to do like to what Jesus did of healing the congenitally blind and the albino.
The Quran suited the Arab and their time, because they were fluent and eloquent in their language, so God – be glorified – said in the Quran 52: 34
, which means:
(Then let them produce ‘words’ like the [Quran] if they are truthful [in their claim that Mohammed has invented it.]
Some other objections of the idolaters to Prophet Mohammed
Quran 25: 7-10
, which mean:
And they say: “What sort of Messenger is this [Mohammed] that he eats food [as do we eat], and walks in the markets [to obtain his livelihood, as do we walk?]
Why has not an angel been sent down to him that he might help him about the warning?”
"Or [why] has not a treasure been cast to him [so that he may not be in need of working], or why has he not a garden to eat of its [fruits?]"
And the wrong-doers [: the associaters] said [to the believers]: "You are only following a man, [whom they] bewitched [and so he has become mad.]"
See [Mohammed] how they describe you in many ways a, and how [their words] have led them astray [from true guidance], and so they cannot find any way [to disprove your case and refute your argument.]
Blessed is [God] Who, if that were His will, could give you [Mohammed] better [things in the life of the World] than the [treasure and the garden, that they suggested:
[so instead of one garden, He can give you] many gardens beneath which rivers flow; and He can give you many palaces.
When they said: “he is only bewitched”, and “he is in need and forsaken” and “he is possessed.”
But the wealth of the Wolrd is useless, because you are not immortal, and you will go to the Next Life, which is better and more enduring.