Treasures - Hidden stores; which would be of great value to Ishmael in his retreat back to Baalis.
Related Commentaries of Jeremiah 41:8
Jeremiah 41:8
8 But ten men were found among them that said unto Ishmael, Slay us not: for we have treasures in the field, of wheat, and of barley, and of oil, and of honey. So he forbare, and slew them not among their brethren.