Manijeh,I consulted with a barrister, and with my familiar, Inky, and it appears that you are absolutely correct. The law seems to make it illegal to smoke the mizzar, if you are Voiceless.
This is obviously most blasphemous, as mizzar is a most sacred plant, beget from the divine dew of Kula, and blessed with a sacrosanct seam shared with Izdu's third eye. Izdu's wisdom belongs to all upon the Disc, no matter their societal status, so, such a law is in direct opposition with tradition.
You should consult the Legates regarding this. I must once again repeat that law is not my forte, and I have nearly no interest in it. Yet I do care about the blessed herb and its partaking, for it should be attainable for all whom wish to submerge themselves in Izdu's wisdom. I hope that this miscue can be remedied most promptly.
Deputy Chief Scribe Bashir Khatara