2 Samuel 3:28-31

28And afterwards David heard [it], and he said, I and my kingdom are guiltless before Jehovah for ever from the blood of Abner the son of Ner:

29let it fall on the head of Joab, and on all his father's house; and let there not fail from the house of Joab one that has an issue, or that is a leper, or that leans on a staff, or that falls by the sword, or that lacks bread!

30So Joab and Abishai his brother killed Abner, because he had slain their brother Asahel at Gibeon in the battle.

31And David said to Joab, and to all the people that were with him, Rend your garments, and gird yourselves with sackcloth, and mourn before Abner. And king David followed the bier.