1 Chronicles 19:3-4

3But the leaders of the Ammonites said to Hanun, “Do you think that David has sent people to console and comfort you because he honors your father? Have his servants not come to you to search and to overthrow and to spy out the land?”

4Therefore Hanun took David’s servants, shaved them [cutting off half their beards], and cut off their garments in the middle as far as their buttocks, and sent them away [in humiliation].