Such communications are allowed only in cases of necessity, the fatwa says.
In fact, nowadays, you can get a fatwa to validate any point you want to make.
The fatwa drove Rushdie into hiding, but his publisher, who was also condemned to death by it, stood firm.
1620s, from Arabic fetwa "a decision given by a mufti," related to fata "to instruct by a legal decision." Popularized 1989 when Ayatollah Khomeini of Iran issued a ruling sentencing author Salman Rushdie to death for publishing "The Satanic Verses" (1988). It was lifted 1998.