Musannaf Ibn Abi Shaybah 40588 — The journey of Aishah, Ali, Talhah

It is narrated from Umayr bin Sa'd that when Sayyiduna Ali (may Allah be pleased with him) returned from the Battle of the Camel, he began preparing for the Battle of Siffin. The people of the tribe of Nakha' gathered and came to al-Ashtar. He said: Is there anyone in the house other than the Nakha'is? They answered: No. Then he said: This Ummah set upon its best man and killed him. We went against the people of Basrah, a people who had pledged allegiance to us, and because of their breaking the pledge we were given victory. Tomorrow you will go against a people who live in Syria and who have not pledged allegiance to us. So let each man among you see where he is going to place his sword.