1 Kings 2:5

5 Moreover you know also what Yo'av the son of Tzeru'yah did to me, even what he did to the two captains of the hosts of Yisra'el, to Aviner the son of Ner, and to `Amasa the son of Yeter, whom he killed, and shed the blood of war in shalom, and put the blood of war on his sash that was about his loins, and in his shoes that were on his feet.