Say: What thing is the weightiest in testimony? Say: Allah is witness between you and me; and this Quran has been revealed to me that with it I may warn you and whomsoever it reaches. Do you really bear witness that there are other gods with Allah? Say: I do not bear witness. Say: He is only one Allah, and surely I am clear of that which you set up (with Him).

And who is more unjust than he who forges a lie against Allah, or says: It has been revealed to me; while nothing has been revealed to him, and he who says: I can reveal the like of what Allah has revealed? and if you had seen when the unjust shall be in the agonies of death and the angels shall spread forth their hands: Give up your souls; today shall you be recompensed with an ignominious chastisement because you spoke against Allah other than the truth and (because) you showed pride against His communications.

Then, it may be that you will give up part of what is revealed to you and your breast will become straitened by it because they say: Why has not a treasure been sent down upon him or an angel come with him? You are only a warner; and Allah is custodian over all things.

He has made plain to you of the religion what He enjoined upon Nuh and that which We have revealed to you and that which We enjoined upon Ibrahim and Musa and Isa that keep to obedience and be not divided therein; hard to the unbelievers is that which you call them to; Allah chooses for Himself whom He pleases, and guides to Himself him who turns (to Him), frequently.

And it is not for any mortal that Allah should speak to them, they could not bear to hear and they did not see.