In the Kassite period the word kudurru designated a monument of a dressed stone or clay boulder that recorded land donations by the king to individuals. They were kept in temples, but sealed copies of the wording were kept in archives. Some had elaborate decoration with divine symbols or the plan of the estate, and powerful curses were addressed to anyone who would obliterate the monument or act against the agreed stipulations.
see BOUNDARY STONES
Historical Dictionary of Mesopotamia. EdwART. 2012.