Ali 'Imran 3:152

Walaqad sadaqakumu AllahuwaAAdahu ith tahussoonahum bi-ithnihi hattaitha fashiltum watanazaAAtum fee al-amri waAAasaytummin baAAdi ma arakum ma tuhibboonaminkum man yureedu addunya waminkum man yureedual-akhirata thumma sarafakum AAanhum liyabtaliyakumwalaqad AAafa AAankum wallahu thoofadlin AAala almu/mineen

And Allāh had certainly fulfilled His promise to you when you were killing them [i.e., the enemy] by His permission until [the time] when you lost courage and fell to disputing about the order [given by the Prophet (ﷺ)] and disobeyed after He had shown you that which you love. Among you are some who desire this world, and among you are some who desire the Hereafter. Then He turned you back from them [defeated] that He might test you. And He has already forgiven you, and Allāh is the possessor of bounty for the believers.

Allah has surely fulfilled His promise to you when you, with His will, were killing them off, until you showed weakness and disputed in the matter and disobeyed after He had shown you what you liked.Among you there were some who were seeking the mundane, and among you there were others who were seeking the Hereafter. After that, He reversed your position against them, so that He may test you. Of course, He has forgiven you. Allah is All-Gracious to the believers.