Islamic criminal law in Aceh sharia courts hear and rule on both civil cases under Islamic law (such as divorce and inheritance) and criminal law under the "qanuns". However, civil cases continue to be the vast majority of cases heard by the court. In 2016 the courts received 10,888 first instance civil cases and 131 appeals, compared to 324 first instance criminal cases and 15 appeals. The sharia courts are part of the broader Indonesian legal system. Their decisions can be appealed to the Supreme Court, and their judges (including the chief judge) are appointed by the Supreme Court. Amnesty International said that they are
Sources of sharia the application of local custom, custom that is accepted into law should be commonly prevalent in the region, not merely in an isolated locality. If it is in absolute opposition to Islamic texts, custom is disregarded. However, if it is in opposition to analogical reason, custom is given preference. Jurists also tend to, with caution, give precedence to custom over doctoral opinions of highly esteemed scholars. Shi'ite scholars do not consider custom as a source of jurisprudence, nor do the Hanbalite or Zahirite schools of Sunni jurisprudence. "Sunni" "Shia" Sources of sharia Various sources of sharia are used by Islamic