Deuteronomy 21:22-23

And if a man have committed a sin worthy of death, and he be to be put to death, and thou hang him on a tree: his body shall not remain all night upon the tree, but thou shalt in any wise bury him that day; (for he that is hanged is accursed of God;) that thy land be not defiled, which the LORD thy God giveth thee for an inheritance.