'Sash' in the Bible

"Moreover you know also what Joab the son of Zeruiah did to me, even what he did to the two captains of the armies of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he killed, and shed the blood of war in peace, and put the blood of war on his sash that was about his waist, and in his shoes that were on his feet.

And the prophet departed, and waited for the king by the way, and disguised himself with a sash over his eyes.

Then he hastily took the sash away from his face; and the king of Israel discerned him, that he was of the prophets.