2 Samuel 20:7-9

7 The men of Joab went out after him, along with the Kerethites, the Pelethites, and all of the warriors; and they went out from Jerusalem to pursue after Sheba the son of Bikri.

8 When they were at the large stone which is in Gibeon, Amasa came to meet them. Now Joab was dressed in his battle armor, and fastened on it was a belt with a sword in its sheath at the waist. As he went forward, it fell out.

9 Joab said to Amasa, “Is it well with you, my brother?” and he took Amasa by the beard with his right hand to kiss him.