So David and his six hundred men went to the Brook of Besor, where some stayed behind

1 Samuel 27:2
So David set out with his six hundred men and went to Achish son of Maoch, the king of Gath.

1 Samuel 30:10
because two hundred men were too exhausted to cross the brook. But David and four hundred men continued in pursuit.

2 Samuel 2:3
David also took the men who were with him, each with his household, and they settled in the towns near Hebron.

2 Samuel 15:18
and all his servants marched past him--all the Cherethites and Pelethites, and six hundred Gittites who had followed him from Gath.

So David went, he and the six hundred men that were with him, and came to the brook Besor, where those that were left behind stayed.