Exegesis of the verse: (( There has certainly been for you a sign in the two armies that met: one army fighting in the cause of Allah and the other disbelieving... ))

It is possible that this is part of the previous statement, meaning: This verse may be part of the previous statement in His saying: Thus, it becomes part of the statement, meaning: Say to them, "Take heed of the example I have set for you" that is, a sign that you will be victorious, because the word "ayah" in the language means a sign; a sign that you will be victorious meaning in the battle between them. "Fay'ah" means a group. Is the intended meaning of "two armies" two actual, real armies? Or is it by way of example? Most exegetes hold that they are two actual armies in a real event. Some exegetes said that it is by way of example, meaning, let us suppose there are two armies in this manner: one fighting in the cause of Allah and the other disbelieving. And if we say they are two armies in a real case, those who hold this view said that the intended meaning is the army of the disbelievers and the believers at Badr. So they are two armies: one fighting in the cause of Allah, namely the Prophet (peace and blessings be upon him) and those with him, and a disbelieving army fighting in the cause of the taghut, as Allah the Exalted said: — Allah is the Greatest — To whom is the address? To the believers. Glory be to Allah, if we took this verse and we were truly believers fighting in the cause of Allah, these people would be in our hands like moths. But the matter is as you know. His saying: meaning two groups of people meaning they met each other. is the subject, and is its predicate. It is permissible for the subject to be indefinite because it is for division. It has passed us that if there is division, it is permissible to begin with an indefinite noun. From this is the saying of the poet:
A day is against us and a day is for us, a day is equal and a day we are superior
So he began with an indefinite noun for the sake of division. Here he said: So he began with an indefinite noun because the context is one of division. in the cause of Allah, meaning in His path.