From Chabad.org: General Overview: This week’s double reading, Behar-Bechukotai, speaks about the Sabbatical and Jubilee years, laws regulating commerce and the redemption of slaves. It also contains a vivid description of the rewards for observing G‑d‘s commandments and the series of punishments that will befall us if we choose to disregard them. The Torah then discusses different types of gifts given to the Temple, and the animal tithe.
G‑d commands Moses regarding the Sh’mitah (Sabbatical) and Jubilee years. Every seventh year is a Sabbatical year, when it is forbidden to work the land (in the Land of Israel). After seven sets of seven years a Jubilee year is proclaimed. During Jubilee years all the laws of the Sabbatical year apply, and, in addition to the Sabbatical laws, all slaves are set free and all lands revert to their original owners. We are commanded to conduct business ethically. Since all land reverts to their original owners during the Jubilee year, the amount of years remaining until the next Jubilee year must be taken into account whenever a real-estate sale is conducted, and the price should be set accordingly. The end of this Aliya enjoins us not to verbally harass or intentionally mislead our fellows.