Some of the companions of Ali wanted to pay Mu`awiya and his...
Some of the companions of Ali wanted to pay Mu`awiya and his army back in their own coin and to stop the supply of water to them, but that great man turned down their suggestion and allowed free use of the water to the enemies. His companions insisted very much saying: “O Commander of the Faithful. Stop water for them as they had done for you. Don't let them drink a drop of water. Let them die of thirst. There will be no need for fighting. You can catch them with your own hands”.
Ali replied: “I can't do what they did. Let them have access to water”. Had Mu`awiya's supporters been of noble character they would have understood the difference between Ali and Mu`awiya and would have realized as to who was on the right path and who was on the wrong. They would then have known that to assist Mu`awiya against Ali was just like helping a thief or a dacoit, or one who was fighting against a Prophet.
Whatever faith Amr ibn al-Aas had he had already sold it to Mu`awiya for the Governorship of Egypt. Otherwise there could be no justification for his helping Mu`awiya when he knew that he stood no comparison with Ali. In the Battle of Siffin the Syrians abused and imprecated on Ali. Mu`awiya was delighted to hear all this.
Most probably he himself instigated and ordered them to do so in the same way in which he had ordered during the period of his own rule that Ali should be abused from the pulpit. This villainous act is an indelible mark of disgrace on his fate, and for that reason he will be looked down upon by others for ever. When the Iraqis heard the Syrians using such abusive language they also wished to reply in the same manner.
But when Ali came to know about it he considered it a slur on the nobleness and good name of his army. He, therefore, delivered before his men a speech, which made a brilliant addition to the lofty principles of his government. He told them to behave honourably towards everyone - whether he was a friend or an enemy. He said: “I don't like that you should begin abusing them.
If you point out their misdeeds and mention the true facts about them it will be something justifiable and you will have done your duty. Instead of using abusive language you should say: ‘O Lord! Protect our faith as well as theirs. Make our reconciliation possible and guide them from ignorance to wisdom so that they may be able to distinguish between truth and falsehood and forsake deviation and rebellion’”.