1 Chronicles 19:2-5

2David said, “I will be kind (gracious) to Hanun son of Nahash, because his father was kind to me.” So David sent messengers to comfort him concerning [the death of] his father. And the servants of David came to the land of the Ammonites to comfort Hanun.

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].

5When David was told how the men were treated, he sent messengers to meet them, for they were very humiliated and ashamed [to return]. So the king said, “Stay in Jericho until your beards grow [back], and then return.”