Just then David's soldiers and Joab returned from a raid, bringing with them a great plunder. But Abner was not with David in Hebron because David had sent him on his way in peace.

1 Samuel 27:8
Now David and his men went up and raided the Geshurites, the Girzites, and the Amalekites. (From ancient times these people had inhabited the land extending to Shur and Egypt.)

2 Samuel 3:23
When Joab and all his troops arrived, he was informed, "Abner son of Ner came to see the king, who sent him on his way in peace."

And, behold, the servants of David and Joab came from pursuing a troop, and brought in a great spoil with them: but Abner was not with David in Hebron; for he had sent him away, and he was gone in peace.