O ye who believe! Remember the Grace of Allah, (bestowed) on you, when there came down on you hosts (to overwhelm you): But We sent against them a hurricane and forces that ye saw not: but Allah sees (clearly) all that ye do.
Behold! they came on you from above you and from below you, and behold, the eyes became dim and the hearts gaped up to the throats, and ye imagined various (vain) thoughts about Allah!
In that situation were the Believers tried: they were shaken as by a tremendous shaking.
And behold! The Hypocrites and those in whose hearts is a disease (even) say: “Allah and His Messenger promised us nothing but delusion!”
Behold! A party among them said: “Ye men of Yathrib! ye cannot stand (the attack)! therefore go back!” And a band of them ask for leave of the Prophet, saying, “Truly our houses are bare and exposed,” though they were not exposed they intended nothing but to run away.
And if an entry had been effected to them from the sides of the (city), and they had been incited to sedition, they would certainly have brought it to pass, with none but a brief delay!
And yet they had already covenanted with Allah not to turn their backs, and a covenant with Allah must (surely) be answered for.
Say: “Running away will not profit you if ye are running away from death or slaughter; and even if (ye do escape), no more than a brief (respite) will ye be allowed to enjoy!”
Say: “Who is it that can screen you from Allah if it be His wish to give you punishment or to give you Mercy?” Nor will they find for themselves, besides Allah, any protector or helper.
Verily Allah knows those among you who keep back (men) and those who say to their brethren, “Come along to us”, but come not to the fight except for just a little while.
Covetous over you. Then when fear comes, thou wilt see them looking to thee, their eyes revolving, like (those of) one over whom hovers death: but when the fear is past, they will smite you with sharp tongues, covetous of goods. Such men have no faith, and so Allah has made their deeds of none effect: and that is easy for Allah.
They think that the Confederates have not withdrawn; and if the Confederates should come (again), they would wish they were in the deserts (wandering) among the Bedouins, and seeking news about you (from a safe distance); and if they were in your midst, they would fight but little.
Ye have indeed in the Messenger of Allah a beautiful pattern (of conduct) for any one whose hope is in Allah and the Final Day, and who engages much in the Praise of Allah.
When the Believers saw the Confederate forces, they said: “This is what Allah and his Messenger had promised us, and Allah and His Messenger told us what was true.” And it only added to their faith and their zeal in obedience.
Among the Believers are men who have been true to their covenant with Allah: of them some have completed their vow (to the extreme), and some (still) wait: but they have never changed (their determination) in the least:
That Allah may reward the men of Truth for their Truth, and punish the Hypocrites if that be His Will, or turn to them in Mercy: for Allah is Oft-Forgiving, Most Merciful.
And Allah turned back the Unbelievers for (all) their fury: no advantage did they gain; and enough is Allah for the believers in their fight. And Allah is full of Strength, able to enforce His Will.
And those of the People of the Book who aided them – Allah did take them down from their strongholds and cast terror into their hearts. (So that) some ye slew, and some ye made prisoners.
And He made you heirs of their lands, their houses, and their goods, and of a land which ye had not frequented (before). And Allah has power over all things.
Shafi, Muhammad (2008). Maariful Quran. (Vol .6 surah 33 verses 9-27). English-MaarifulQuran-MuftiShafiUsmaniRA-Vol-7.pdf (islamicweblibrary.com)