The Immanu's and the Elite of the Ansar

When they discovered that it is the army instead of the caravan, there was some hesitation. Allah subhanahu wa ta'ala describes this in his book Sireh. And notice here by the way, that Allah is criticizing, but at the same time he describes them with what term? Mo'manun,. and Mo'manUN is a high term, Allah didn't say Muslim, right? Therefore this is a consolation to them, that yes they, they made an error here, but they still have iman.