What does Deuteronomy 21:23 mean?

don’t leave the body hanging overnight. Make sure to bury it the same day, because anyone hung like that is under God’s curse. Don’t bring guilt on your land, since it’s the land the Lord your God is giving you. Deuteronomy 21:23 - Modern Text Bible

(The body must be buried the same day to avoid defiling the land. Hanging is a sign of being cursed, but the land must stay clean.)