Indifferent strokes.
I found this article in the print version of the Independent today (can't find it online unfortunately). I shall quote it in full, as it's short. The italics at the end are mine.

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"Spanish Imam jailed over women-beating text"

The imam of Fuengirola, Mohamed Kamal Mustafa, has been sentenced by a court in Barcelona, Spain, to 15 months in jail for inciting violence against women in a book that described how to beat a woman without leaving marks. His lawyer is to appeal, saying the imam merely reproduced centuries-old Islamic principles and was the victim of 'unjust' media pressure.
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So I guess that makes it acceptable then?