2 Samuel 18:21-22

21Then Joab said to the Cushite, “Go, tell the king what you have seen.” So the Cushite bowed to Joab and ran.

22Now Ahimaaz the son of Zadok said once more to Joab, “But whatever happens, please let me also run after the Cushite.” And Joab said, “Why would you run, my son, since 1you will have no reward for going?”