Ali 'Imran 3:152 ولقد صدقكم الله وعده اذ تحسونهم باذنه حتى اذا فشلتم وتنازعتم في الامر وعصيتم من بعد ما اراكم ما تحبون منكم من يريد الدنيا ومنكم من يريد الاخرة ثم صرفكم عنهم ليبتليكم ولقد عفا عنكم والله ذو فضل على المومنين ١٥٢

Allah surely fulfilled His promise (of succour) when you were slaying them by His leave until the moment when you flagged and quarrelled among yourselves about the matter, and acted against the order of (the Prophet). Soon He showed you what you had intensely desired - for some among you sought this world and some of you sought the Next. Thereupon, in order to put you to a test He turned you away from your foes. Still He pardoned you after that¹ for Allah is Bounteous to those who believe.