Alright, so it says holy text. This must be regarding the religion of Iran, which is Islam. The book of Islam is the Qur'an. I would give an educated guess that the blank would be filled in by "Quran"
Iran, as an Islamic State, follows the Quoran, which is the sacred book for muslims. As a result, the Sharia is the legal system of Iran (and other nations following these religious precepts). Any restriction or banned activity contemplated in the Quoran would also be counted as illegal or crime in the judiciary system, because there is no separation between political and religious power.
