Upon arrival in Siffin...
Upon arrival in Siffin, Ali's army found its access to the water-front barred by a strong contingent of the Syrian troops. Ali sent Sa'sa' ibn Sauhan, a companion of the Prophet, to Muawiya, asking him to withdraw his pickets from the river, and to allow free access to water, to everyone. Muawiya, of course, refused to do so whereupon Ali ordered his troops to seize the water-front by force. His troops routed the Syrians, and captured the water-front.
Now there was consternation and panic in the camp of Muawiya. He conjured up the specter of death in the desert by thirst. But Amr bin Aas assured him that Ali would never deny water to anyone. The Syrians had no way to reach the water. Ali's generals were of the opinion that they should pay Muawiya back in his own coin. There was nothing easier for them than to let the whole Syrian army perish with thirst.
But Ali gently reproved them for wishing to imitate an example which they themselves condemned, and he declared: “The river belongs to God. There is no embargo on water for anyone, and whoever wishes, may take it.” Minor skirmishes began in Zilhajj 36 A.H., May 657. (Zilhajj is the last month of the Islamic calendar) and continued sporadically for the next few weeks. With the arrival of Moharram (the first month of the Islamic year), fighting was suspended for one month.
During this month of truce (Moharram), Ali renewed his search for peace but his efforts to solve problems through negotiation, or to find solutions that would obviate fighting among the Muslims, were all fruitless for the simple reason that his adversary, Muawiya, didn't see peace as an option. He opposed détente because it was incompatible with his interests.
Ali should have been made cynical by duplicity, tragedy and bitter experience – yet he was ready to believe, despite all precedent, in a prospect for peace, and was ready to work for it. When the last day of Moharram passed, and the month of Safar began, Ali sent Merthid ibn Harith to deliver a message to the Syrians. He stood in front of the Syrian army, and read the message as follows: “O Syrians!
Ali, the Chief of the Believers, informs you that he gave you every chance to verify the facts and to satisfy yourselves. He invited you to follow the Book of God but you have paid no attention. Now there is nothing more that he can tell you. Without a doubt, God does not befriend those who betray Truth.” (Tabari, History, vol. IV, p.