2 Samuel 20:8-10

New Revised Standard Version, Anglicised

⁸ When they were at the large stone that is in Gibeon, Amasa came to meet them. Now Joab was wearing a soldier’s garment and over it was a belt with a sword in its sheath fastened at his waist; as he went forward it fell out. ⁹ Joab said to Amasa, ‘Is it well with you, my brother?’ And Joab took Amasa by the beard with his right hand to kiss him. ¹⁰ But Amasa did not notice the sword in Joab’s hand; Joab struck him in the belly so that his entrails poured out on the ground, and he died. He did not strike a second blow.

Then Joab and his brother Abishai pursued Sheba son of Bichri.