The First Attack on Imam Husayn’s camp
"Thursday, the night of the ninth of Muharram, ‘Umar ordered his entire army to attack the Imam’s camp at once. The Imam was sitting, then said to his brother ′Abbās, “Go to them and see what they are up to.”
′Abbās went with twenty followers. Among them were Zuhayr and Habib. They asked the army, and the army replied that the order of the governor came that they must obey him and his rule, or fight. ′Abbās went back to the Imam and told him.