Christian Concern has intervened in a case at the European Court of Human Rights, which is set to rule whether sharia law should be applied to a dispute between Greek citizens who are Muslims. The ruling will determine whether sharia law can ever have supremacy over a country's domestic law. Mrs Molla Sali inherited the entire estate of her husband when he died, under the terms of a will that he had drawn up in accordance with Greek law. Two sisters of her husband are claiming that since he was a Muslim, the inheritance should be allocated according to sharia law, adjudicated by the mufti. A ruling at this level could have dire effects on the Council of Europe, including the UK. Christian Concern said it will highlight in court that sharia law is out of line with European law.