When you meet (an enemy) force, take a firm stand (Surah Al-Anfal 8: 45-46)

And obey Allah and His Messenger, and do not dispute (with one another) lest you lose courage and your strength departs, and be patient. Surely, Allah is with the patients (Surah Al-Anfal 8: 46)


Manners of War

Allah instructs His faithful servants in the manners of fighting and methods of courage when meeting the enemy in battle,

O you who believe! When you meet (an enemy) force, take a firm stand against them In the Two Sahihs, it is recorded that `Abdullah bin Abi Awfa said that during one battle, Allah's Messenger (Sallallahu Alayhi wa Sallam) waited until the sun declined, then stood among the people and said,

O people! Do not wish to face the enemy (in a battle) and ask Allah to save you (from calamities). But if you should face the enemy, then be patient and let it be known to you that Paradise is under the shadows of the swords.

He (Sallallahu Alayhi wa Sallam) then stood and said,  

O Allah! Revealer of the (Holy) Book, Mover of the clouds, and Defeater of the Confederates, defeat them and grant us victory over them.


The Command for Endurance when the Enemy Engaging

Allah commands endurance upon meeting the enemy in battle and ordains patience while fighting them. Muslims are not allowed to run or shy away, or show cowardice in battle. They are commanded to remember Allah while in that condition and never neglect His remembrance. They should rather invoke Him for support, trust in Him and seek victory over their enemies from Him. They are required to obey Allah and His Messenger (Sallallahu Alayhi wa Sallam) in such circumstances adhering to what He commanded them, and abstaining from what He forbade them. They are required to avoid disputing with each other, for this might lead to their defeat and failure,

lest your strength departs,  so that your strength, endurance and courage do not depart from you,

and be patient. Surely, Allah is with the patient.

In their courage, and obedience to Allah and His Messenger (Sallallahu Alayhi wa Sallam) , the Companions (Radhi Allahu Anhum) reached a level never seen before by any nation or generation before them, or any nation that will ever come. Through the blessing of the Messenger (Sallallahu Alayhi wa Sallam) and their obedience to what he commanded, the Companions were able to open the hearts, as well as, the various eastern and western parts of the world in a rather short time. This occurred even though they were few, compared to the armies of the various nations at that time. For example, the Romans, Persians, Turks, Slavs, Berbers, Ethiopians, Sudanese tribes, the Copts and the rest of the Children of Adam. They defeated all of these nations, until Allah's Word became the highest and His religion became dominant above all religions. The Islamic state spread over the eastern and western parts of the world in less than thirty years. May Allah grant them His pleasure, as well as, be pleased with them all, and may He gather us among them, for He is the Most Generous, and Giving.


Source: Tafsir ibn Kathir (Abridged)