2 Samuel 3:29 YLT

²⁷  And Abner turneth back to Hebron, and Joab turneth him aside unto the midst of the gate to speak with him quietly, and smiteth him there in the fifth 'rib' -- and he dieth -- for the blood of Asahel his brother.

²⁸  And David heareth afterwards and saith, 'Acquitted 'am' I, and my kingdom, by Jehovah, unto the age, from the blood of Abner son of Ner;

²⁹  it doth stay on the head of Joab, and on all the house of his father, and there is not cut off from the house of Joab one having an issue, and leprous, and laying hold on a staff, and falling by a sword, and lacking bread.'

³⁰  And Joab and Abishai his brother slew Abner because that he put to death Asahel their brother, in Gibeon, in battle.

³¹  And David saith unto Joab, and unto all the people who 'are' with him, 'Rend your garments, and gird on sackcloth, and mourn before Abner;' and king David is going after the bier.