"Baháʼu'lláh thus provided for the progressive application of his laws; for example certain Baháʼí laws are currently only applicable to Iranian Baháʼís such as the limit to the period of engagement, while any Baháʼí may practice the laws if they so decide.Shoghi Effendi also stated that certain other laws, such as criminal laws, that are dependent upon the existence of a predominantly Baháʼí society would only be applicable in a possible future Baháʼí society.