One party had to go forth in the field...

One party had to go forth in the field, to fight the enemy when the prophet himself was not leading the army and remained in the capital. And the next party had to stay with the prophet to learn theology, in order to teach the other fighters when they returned from the battle- field. Of course in this case both the learners, and the teachers, were soldiers and warriors!

Learning wisdom and knowledge is also some sort of fighting against the devil of ignorance, and is no less important in the sight of Allah, than fighting against heathenism. Therefore some of the believers were ordered to remain in Medina with the Messenger of God, for the purpose of study and…