2 Samuel 3:27-29

So when Abner returned to Hebron, Joab took him aside into the middle of the gate to speak with him privately, and there he struck him in the belly so that he died on account of the blood of Asahel his brother. Afterward when David heard it, he said, “I and my kingdom are innocent before the LORD forever of the blood of Abner the son of Ner. May it fall on the head of Joab and on all his father’s house; and may there not fail from the house of Joab one who has a discharge, or who is a leper, or who takes hold of a distaff, or who falls by the sword, or who lacks bread.”