2 Samuel 20:8

And when they had marched out of Jerusalem in pursuit of Sabee, son of Bochori, and were come to the great heap of stones at Gabaon, Amessai came in before them. Now Joab had a military robe girded on for his dress, and over it he was girt with a sword on his thigh in its sheath, and the sword dropped out.

And they were by the great stone that is in Gabaon: and Amessai went in before them: and Joab had upon him a military cloak over his apparel, and over it he was girded with a dagger fastened upon his loins in its scabbard: and the dagger came out, it even came out and fell.