The Companies - 39:1
The sending down of the Book is from Allah, the Exalted, the Wise.
They claimed that the Qur'an was edited by none other than Allah:
The Criterion/25:4
"Those who disbelieved said, "This is nothing but a lie invented by him with the help of others"."
The Criterion/25:5
"They said, "What he writes is the fables of the ancients, dictated to him day and night."
The Bee/16:103
"Surely we know what they say, "A man is teaching him". The language of the one they intend is a foreign language, while this is a clear Arabic language."
The Prophets/21:3
"Their hearts are reckless. The wrongdoers talked to each other in secret: "Is this man not a man like you? Are you going to be bewitched?"
The Prophets/21:4
"He said, "My Lord knows every word in heaven and earth. He is the Hearing, the Knowing. "
The Prophets/21:5
"They even said, "It is a vain imagination,"and, "He has fabricated it,"and, "He is a poet; let him bring us miracles like the messengers of old."
Prophet Hud/11:35
"Do they say: "He fabricated this (this historical discussion)"(O Muhammad) Say: "If I fabricated it, I shall be responsible for my crime, and I have nothing to do with your crimes."
The Prostration/32:3
"Do they say, "He has fabricated it"? But this is a truth from your Lord, that you may warn a people to whom no warner has reached before you, that they may be guided."
Council/42:24
"Do they say, "Has he fabricated a lie about Allah"? If Allah wills, He can seal your heart. Allah erases falsehood and establishes truth in His words. He knows the most secret thoughts."
The Sandhills/46:8
"Or do they say, "He fabricated it"? Say, "If I have fabricated it, you cannot protect me against anything from Allah. He knows best your transgression. He is sufficient as a witness between me and you. He is Forgiving, Merciful."
The Mountain/52:33
"Or do they say, "He invented it"? No, they do not believe."
The Mountain/52:34
Let them bring a hadith like it if they are truthful.
Prophet Hud/11:13
"Do they say: "He fabricated it (the Qur´an)"? Say: "Come on, bring ten suras like it, fabricated. And call all your friends besides Allah, if you are truthful!"
Prophet Hud/11:14
If they could not answer you, know that it has been sent down with the knowledge of Allah and there is no god but Him. Will you then become Muslims?
Prophet Jonah/10:38
"Do they say: "He fabricated it"? Say: "If you are truthful, bring a surah like it, and call upon those whom you can call upon besides Allah."
The Cow/2:23
If you doubt what We have sent down to Our servant, bring a surah like it. And call to your aid all your witnesses besides Allah, if you are truthful.