Ordinance or edict (6)
I believe the answer is:
decree
I believe this clue is a double definition.
'ordinance' is the first definition.
(I've seen this before)
'edict' is the second definition.
(I know that edict can be written as decree)
(Other definitions for decree that I've seen before include "Legally-binding edict" , "Judgment of a court" , "Formal order or ruling" , "Ordain" , "Rule" .)