2 Samuel 3:27-29 Complete Jewish Bible (CJB)
27 Upon Avner’s return to Hevron, Yo’av took him aside into the space between the outer and inner city gates as if to speak with him privately; and there he struck him in the groin, so that he died — thus avenging the death of ‘Asah’el his brother.
28 Afterwards, when David heard of it, he said, “I and my kingdom are forever innocent of the death of Avner the son of Ner. 29 Let it fall on the head of Yo’av and all his father’s family. May Yo’av’s family always have someone with a hemorrhage or tzara‘at, or who has to walk with a cane, or who dies by the sword or who lacks food.”