Jeremiah 41:8-9

8But ten of the men said, ‘Please do not kill us! We have hidden lots of wheat, barley, olive oil and honey in a field. We will give it to you.’ So Ishmael let them stay alive. He did not kill them with the other men.

9Ishmael filled the deep hole with all the dead bodies of the men he had murdered. The hole had been built by King Asa to store water. Asa had dug holes like that to keep the city safe from King Baasha of Israel.