2 Samuel 18:13

10 And a certain man saw [it], and told Joab, and said, Behold, I saw Absalom hanging in an oak.

11 And Joab said to the man that told him, And behold, thou sawest [him], and why didst thou not smite him there to the ground? and I would have given thee ten [shekels] of silver, and a girdle.

12 And the man said to Joab, Though I should receive a thousand [shekels] of silver in my hand, [yet] would I not put forth my hand against the king's son: for in our hearing the king charged thee and Abishai and Ittai, saying, Beware that none [touch] the young man Absalom.

13 Otherwise I should have wrought falsehood against my own life: for there is no matter hid from the king, and thou thyself wouldst have set thyself against [me].

14 Then said Joab, I may not tarry thus with thee. And he took three darts in his hand, and thrust them through the heart of Absalom, while he [was] yet alive in the midst of the oak.

15 And ten young men that bore Joab's armor compassed about and smote Absalom, and slew him.

16 And Joab blew the trumpet, and the people returned from pursuing Israel: for Joab restrained the people.