In some of the days of Siffin Amir al-mu’minin said to his followers about ways of fighting
O’ crowd of Muslims! Make fear of Allah the routine of your life. Cover yourselves with peace of mind and clinch your teeth because this makes the sword slip off from the skull. Complete your armour and shake your swords in their sheathes before showing them out.
Have your eyes on the enemy. Use your spears on both sides and strike (the enemy) with swords. Keep in mind that you are before Allah and in the company of the Prophet’s cousin. Repeat your attacks and feel ashamed of running away, because it is a shame for posterity and (cause of awarding you) fire on the Day of Judgement. Give your lives (to Allah) willingly and walk towards death with ease.
Beware of this great majority, and the pitched tent and aim at its centre because Satan is hiding in its cornet. He has extended his hand for assault and has kept back his foot for running away. Keep one enduring till the light of Truth dawns upon you.
While ye have the upper hand, and Allah is with you, and never will He depreciate your deeds. (Qur’an, 47:35)
When after the death of the Prophet news reached Amir al-mu’minin about the happening in Saqifah of Bani Sa`idah,he enquired what the ansar said. People said that they were asking for one chief from among them and one from the others, Amir al-mu’minin said:
Why did you not argue against them (ansar) that the Prophet had left his will that whoever is good among ansar should be treated well and whoever is bad he should be forgiven.
People said: “What is there against them in it?”
Amir al-mu’minin said:
“If the Government was for them there should have been no will in their favour.”
Then he said:
“What did the Quraysh plead?”
People said: “They argued that they belong to the lineal tree of the Prophet.
Then Amir al-mu’minin said:
“They argued with the tree but spoiled the fruits.”
Admonishing his companions about careless behaviour Amir al-mu’minin said:
How long shall I accord you consideration that is accorded to camels with hollow hump, or to worn clothes which when stitched on one side give way on the other. Whenever a vanguard force of Syria (ash-Sham) hovers over you, everyone of you shuts his door and hides himself like the lizard in its hole or a badger it its den.
By Allah, he whom people like you support must suffer disgrace and he who throws arrows with your support is as if he throws arrows that are broken both at head and tail. By Allah, within the courtyard you are quite numerous but under the banner you are only a few.
Certainly, I know what can improve you and how your crookedness can be straightened. But I shall not improve your condition by marring myself.
Allah may disgrace your faces and destroy you. You do not understand the right as you understand the wrong and do not crush the wrong as you crush the right.