34 SEC. 18. Shari'ah Courts. – The Shari'ah district courts and the Shari'ah circuit courts created under existing laws shall continue to function as provided therein. The judges of the Shari'ah courts shall have the same qualifications as the judges of the regional trial courts, the metropolitan trial courts or the municipal trial courts, as the case may be. In addition, they must be learned in Islamic law and jurisprudence. SEC. 19. Tribal Courts. – There is hereby created a system of tribal courts, which may include a Tribal Appellate Court, for the indigenous cultural communities in the autonomous region. These courts shall determine, settle, and decide controversies and enforce decisions involving personal and family and property rights of members of the indigenous cultural community concerned in accordance with the tribal codes of these communities. These courts may also exercise exclusive jurisdiction over crimes committed by members of indigenous cultural communities where the imposable penalty as prescribed by the Revised Penal Code or other pertinent law does not exceed imprisonment of six (6) years or a fine not exceeding Fifty thousand pesos (P50,000) or both such imprisonment and fine and where the offended party or parties are also members of the indigenous cultural community concerned. The Regional Assembly shall define the composition and jurisdiction of the said courts in accordance with the Constitution, existing laws, and this Organic Act. SEC. 20. Jurisconsult in Islamic Law. – The Regional Assembly shall give priority consideration to the organization of the office of jurisconsult in Islamic law as established under existing law and provision for its facilities to enable the proper functioning of the office. SEC. 21. Customary Law. – The Regional Assembly shall provide for the codification of indigenous laws and compilation of customary laws of the Muslims and the indigenous cultural communities in the autonomous region. SEC. 22. Application and Interpretation of Laws. – The provisions of the Muslim code and the tribal code shall be applicable