1 Chronicles 19:6

3 But the princes of the children of Ammon said to Hanun, Thinkest thou that David doth honor thy father, that he hath sent comforters to thee? are not his servants come to thee to search, and to overthrow, and to explore the land?

4 Wherefore Hanun took David's servants, and shaved them, and cut off their garments in the midst hard by their buttocks, and sent them away.

5 Then there went [certain], and told David how the men were served. And he sent to meet them: for the men were greatly ashamed. And the king said, Tarry at Jericho until your beards are grown, and [then] return.

6 And when the children of Ammon saw that they had made themselves odious to David, Hanun and the children of Ammon sent a thousand talents of silver to hire them chariots and horsemen out of Mesopotamia, and out of Syria-maachah, and out of Zobah.

7 So they hired thirty and two thousand chariots, and the king of Maachah and his people, who came and encamped before Medeba. And the children of Ammon assembled from their cities, and came to battle.

8 And when David heard [of it], he sent Joab, and all the host of the mighty men.

9 And the children of Ammon came out, and put the battle in array before the gate of the city: and the kings that had come [were] by themselves in the field.