1 Kings 2:5

"Now you also know what Joab the ason of Zeruiah did to me, what he did to the two commanders of the armies of Israel, to bAbner the son of Ner, and to cAmasa the son of Jether, whom he killed; he also shed the blood of war in peace. And he put the blood of war on his belt about his waist, and on his sandals on his feet.