2 Samuel 18:22-23

18:22 Ahimaaz the son of Zadok again spoke to Joab, “Whatever happens, let me go after the Cushite.” But Joab said, “Why is it that you want to go, my son? You have no good news that will bring you a reward.” 18:23 But he said, “Whatever happens, I want to go!” So Joab said to him, “Then go!” So Ahimaaz ran by the way of the Jordan plain, and he passed the Cushite.

2 Samuel 18:11

18:11 Joab replied to the man who was telling him this, “What! You saw this? Why didn’t you strike him down right on the spot? I would have given you ten pieces of silver and a commemorative belt!”