The verse says: “.
Since the movement and advance of a large army from the distance seems that it crawls and proceeds, it is called such. The abundance of the forces of the enemy cannot be taken is an allowance to flee from the battle-field. The verse says: “O’ you who have Faith!
when you meet those who disbelieve (to attack) in battle, then do not turn your backs to them.” Imam Rida (as), upon the philosophy of the banning of escape (from the battle-field), in a tradition has said: “Flight is the weakness of religion, contempt of the leader of the Truth, encouraging the enemy, and wiping out the school of law.” [^1] Among the advantages that Ali-ibn-Abitalib (as) had, and to which as an example he himself sometimes referred, was the very matter of flight from the battle-field.
“And whoever turns his back to them on that day, unless withdrawing to fight again or removing to join another troop, he has incurred wrath from Allah, and his abode is Hell; and an evil destination it is.”*** In Islam, it is unlawful to flee from battle-fields, but there are two exceptions mentioned in this verse for it.
One of them is that the escape is done with the purpose of renewing the equipments and the situation and the second is to remove in order to join another group of Muslims, so that they attack wholly with together. In some commentary books, there have also been mentioned some other instances. For example: flight with the aim of giving information to Muslims, or protecting some more important entrenchments.[^2] These examples are also some extentions of the first aspect.