When the Ammonites saw the Syrians running away, they fled from Abishai and retreated into the city. Then Joab turned back from fighting the Ammonites and went back to Jerusalem.
The following spring, at the time of the year when kings usually go to war, David sent out Joab with his officers and the Israelite army; they defeated the Ammonites and besieged the city of Rabbah. But David himself stayed in Jerusalem.
So the king said to Abishai, “Sheba will give us more trouble than Absalom. Take my men and go after him, or else he may occupy some fortified towns and escape from us.”
Joab's brother Abishai (their mother was Zeruiah) was the leader of “The Famous Thirty.” He fought with his spear against three hundred men and killed them, and became famous among “The Thirty.”