3:152 Allah has been true in His promise towards you when you routed them by His leave, until you lost heart, and quarreled about the matter, and disobeyed, after He had shown you that which you loved. Some among you wanted the world, and some among you wanted the Everlasting Life. Then He made you turn away from them in order to test you. But He has forgiven you, for Allah is Bounteous to the believers.
3:153 And when you were going up, and paid no heed for anyone, and the Messenger was calling you from behind; so He rewarded you with grief upon grief that you might not sorrow for what escaped you neither for what smote you. And Allah is Aware of what you do.
3:154 Then, after sorrow, He sent down upon you safety. Slumber overtook a party, while another party cared only for themselves, thinking of Allah thoughts that were not true, the guess of ignorance, saying, 'Have we any say in the affair?' Say, 'The entire affair belongs to Allah.' They conceal in themselves what they do not disclose to you. They say, 'If we had any say in the affair we should not have been killed here.' Say, 'Had you stayed in your homes, those of you for whom slaying was written would have come out to their (death) beds so that Allah might try what was in your chests and that He will examine what is in your hearts.' And Allah knows the innermost of the chests.
3:155 Those of you who turned away on the day when the two armies met must have been seduced by satan on account of some of what they had earned. But Allah has pardoned them. He is Forgiving and Clement.