Who is disqualified from inheriting the property of an intestate under Muslim law ?

All three persons named are disqualified from inheriting under the classical rules of Muslim law, which recognise difference of religion, homicide and illegitimacy as grounds of exclusion. Under Sunni law a person who caused the death of the intestate is excluded whether the killing was intentional or accidental, while Shia law excludes only an intentional killer. An illegitimate child is excluded altogether in Shia law and from inheriting through the father in Sunni law. A non-Muslim cannot inherit from a Muslim under these rules.