Indeed, Allah was pleased with the believers when they gave their Bai'a (pledge) to you (O Muhammad ﷺ) under the tree, He knew what was in their hearts, and He sent down As-Sakinah (calmness and tranquillity) upon them, and He rewarded them with a near victory,

And abundant spoils that they will capture. And Allah is Ever All-Mighty, All-Wise.

Allah has promised you abundant spoils that you will capture, and He has hastened for you this, and He has restrained the hands of men from you, that it may be a sign for the believers, and that He may guide you to a Straight Path.

And other (victories and much booty there are, He promises you) which are not yet within your power, indeed Allah compasses them, And Allah is Ever Able to do all things.

And if those who disbelieve fight against you, they certainly would have turned their backs, then they would have found neither a Wali (protector) nor a helper.

That has been the Way of Allah already with those who passed away before. And you will not find any change in the Way of Allah.

And He it is Who has withheld their hands from you and your hands from them in the midst of Makkah, after He had made you victors over them. And Allah is Ever the All-Seer of what you do.

They are the ones who disbelieved (in the Oneness of Allah Islamic Monotheism), and hindered you from Al-Masjid-al-Haram (the sacred mosque of Makkah) and the sacrificial animals, detained from reaching their place of sacrifice. Had there not been believing men and believing women whom you did not know, that you may kill them, and on whose account a sin would have been committed by you without (your) knowledge, that Allah might bring into His Mercy whom He will, if they (the believers and the disbelievers) should have been apart, We verily had punished those of them who disbelieved, with painful torment.

When those who disbelieve had put in their hearts pride and haughtiness the pride and haughtiness of the time of ignorance, then Allah sent down His Sakinah (calmness and tranquillity) upon His Messenger (ﷺ) and upon the believers, and made them stick to the word of piety (i.e. none has the right to be worshipped but Allah), and they were well entitled to it and worthy of it. And Allah is the All-Knower of everything.