And if you are in doubt as to that which We have revealed to Our servant, then produce a chapter like it and call on your witnesses besides Allah if you are truthful.

O you who believe! when you deal with each other in contracting a debt for a fixed time, then write it down; and let a scribe write it down between you with fairness; and the scribe should not refuse to write as Allah has taught him, so he should write; and let him who owes the debt dictate, and he should be careful of (his duty to) Allah, his Lord, and not diminish anything from it; but if he who owes the debt is unsound in understanding, or weak, or (if) he is not able to dictate himself, let his guardian dictate with fairness; and call in to witness from among your men two witnesses; but if there are not two men, then one man and two women from among those whom you choose to be witnesses, so that if one of the two errs, the second of the two may remind the other; and the witnesses should not refuse when they are summoned; and be not averse to writing it (whether it is) small or large, with the time of its falling due; this is more equitable in the sight of Allah and assures greater accuracy in testimony, and the nearest (way) that you may not entertain doubts (afterwards), except when it is ready merchandise which you give and take among yourselves from hand to hand, then there is no blame on you in not writing it down; and have witnesses when you barter with one another, and let no harm be done to the scribe or to the witness; and if you do (it) then surely it will be a transgression in you, and be careful of (your duty) to Allah, Allah teaches you, and Allah knows all things.

Our Lord! surely Thou art the Gatherer of men on a day about which there is no doubt; surely Allah will not fail (His) promise.

Allah, there is no god but He-- He will most certainly gather you together on the resurrection day, there is no doubt in it; and who is more true in word than Allah?

O you who believe! call to witness between you when death draws nigh to one of you, at the time of making the will, two just persons from among you, or two others from among others than you, if you are travelling in the land and the calamity of death befalls you; the two (witnesses) you should detain after the prayer; then if you doubt (them), they shall both swear by Allah, (saying): We will not take for it a price, though there be a relative, and we will not hide the testimony of Allah for then certainly we should be among the sinners.

Say: To whom belongs what is in the heavens and the earth? Say: To Allah; He has ordained mercy on Himself; most certainly He will gather you on the resurrection day-- there is no doubt about it. (As for) those who have lost their souls, they will not believe.

They only ask leave of you who do not believe in Allah and the latter day and their hearts are in doubt, so in their doubt do they waver.

The building which they have built will ever continue to be a source of disquiet in their hearts, except that their hearts get cut into pieces; and Allah is Knowing, Wise.

And this Quran is not such as could be forged by those besides Allah, but it is a verification of that which is before it and a clear explanation of the book, there is no doubt in it, from the Lord of the worlds.

Has not the account reached you of those before you, of the people of Nuh and Ad and Samood, and those after them? None knows them but Allah. Their messengers come to them with clear arguments, but they thrust their hands into their mouths and said: Surely we deny that with which you are sent, and most surely we are in serious doubt as to that to which you invite us.

Do they not consider that Allah, Who created the heavens and the earth, is able to create their like, and He has appointed for them a doom about which there is no doubt? But the unjust do not consent to aught but denying.

And thus did We make (men) to get knowledge of them that they might know that Allah's promise is true and that as for the hour there is no doubt about it. When they disputed among themselves about their affair and said: Erect an edifice over them-- their Lord best knows them. Those who prevailed in their affair said: We will certainly raise a masjid over them.

And because the hour is coming, there is no doubt about it; and because Allah shall raise up those who are in the graves.

Is there in their hearts a disease, or are they in doubt, or do they fear that Allah and His Messenger will act wrongfully towards them? Nay! they themselves are the unjust.

And certainly Yusuf came to you before with clear arguments, but you ever remained in doubt as to what he brought; until when he died, you said: Allah will never raise a messenger after him. Thus does Allah cause him to err who is extravagant, a doubter

Say: Allah gives you life, then He makes you die, then will He gather you to the day of resurrection wherein is no doubt, but most people do not know.

And when it was said, Surely the promise of Allah is true and as for the hour, there is no doubt about it, you said: We do not know what the hour is; we do not think (that it will come to pass) save a passing thought, and we are not at all sure.

The believers are only those who believe in Allah and His Messenger then they doubt not and struggle hard with their wealth and their lives in the way of Allah; they are the truthful ones.

They will cry out to them: Were we not with you? They shall say: Yea! but you caused yourselves to fall into temptation, and you waited and doubted, and vain desires deceived you till the threatened punishment of Allah came, while the archdeceiver deceived you about Allah.

And (as for) those of your women who have despaired of menstruation, if you have a doubt, their prescribed time shall be three months, and of those too who have not had their courses; and (as for) the pregnant women, their prescribed time is that they lay down their burden; and whoever is careful of (his duty to) Allah He will make easy for him his affair.

And We have not made the wardens of the fire others than angels, and We have not made their number but as a trial for those who disbelieve, that those who have been given the book may be certain and those who believe may increase in faith, and those who have been given the book and the believers may not doubt, and that those in whose hearts is a disease and the unbelievers may say: What does Allah mean by this parable? Thus does Allah make err whom He pleases, and He guides whom He pleases, and none knows the hosts of your Lord but He Himself; and this is naught but a reminder to the mortals.