The Sultan of the Malaysian state of Selangor, Sharafuddin Idris Shah, issued the prohibition on Tuesday, according to the Lebanon Debate newspaper.
Malaysian media have reported that the prohibition has been put in place by the Islamic leader because it is a "sacred word," and should be reserved exclusively for Muslims, according to MidEast Christian News.
The sultan has ordered the Islamic Council of Selangor and the Islamic Affairs Department in the state to take strict action against all groups that question the fatwa and the 1988 Ordinance, which prohibits the use of the word "Allah" in Arabic [by non-Muslims].