1 Samuel 26:3

And Saul pitched in the hill of Hachilah which lieth before the wilderness, by the wayside. But David dwelt in the wilderness. And when he saw that Saul came after him into the wilderness,

1 Samuel 23:19

Then came the Ziphites to Saul, to Gibeah, saying, "David hideth himself fast by us in strongholds that are in a thicket in the hill of Hachilah on the rightside of the wilderness.

1 Samuel 26:1

After that came the Ziphites unto Saul to Gibeah saying, "David hideth himself in the hill of Hachilah even before the wilderness."

Treasury of Scripture Knowledge

Summary

And Saul pitched in the hill of Hachilah, which is before Jeshimon, by the way. But David abode in the wilderness, and he saw that Saul came after him into the wilderness.

Bible References

Hachilah

1 Samuel 26:1
After that came the Ziphites unto Saul to Gibeah saying, "David hideth himself in the hill of Hachilah even before the wilderness."
1 Samuel 23:19
Then came the Ziphites to Saul, to Gibeah, saying, "David hideth himself fast by us in strongholds that are in a thicket in the hill of Hachilah on the rightside of the wilderness.