Say to the Bedouin Arabs who lagged behind that: “You shall be called (to fight) against a people possessing mighty prowess. Either you kill them, or they surrender. Then if you obey (Allah), Allah shall give you a handsome wage; and if you turn back as you turned back before, He shall torment you with a painful torment”.
There is no difficulty (responsibility) for the blind, the lame, and the sick. Whoever obeys Allah and His Messenger, (Allah) puts them in heavens under which the rivers flow, and whoever turns back, torments with a painful torment.
Certainly Allah was pleased with the believers when they swore allegiance to you under that tree, and He knew what was in their hearts. So He sent down As-Sakînah (tranquility) on them and He rewarded them with a near conquest.
And there is abundant booty. They take them. And Allah is Ever All-Mighty, All-Wise.
Allah has promised you much booty that you will take. So He has hastened for you this, and He has restrained the hands of others from you. And that it may be a Sign for the believers and that He may deliver you to Sıratı Mustakîm (the path directed to Allah).
And other (booty) that Allah encompasses which you have not yet reached and Allah has Power over all things.
And if those who disbelieve had fought you, they would certainly have turned their backs (they would have run away), then they would not have found any friend nor a helper.
This is the SunnetAllâh (Practice of Allah) that has been everlasting, and you cannot find a change in the SunnetAllâh.