4. The religious and customary law Nature of the law in this system The content of the law, it is religion or tradition as a basis for legislation such as the Islamic law imposes a duty of Muslims towards God. At present, the Muslims. Islamic law are essential in enacting laws on family and heritage. But the law in any other way is to use the Law of the West or in the four southern provinces. Pattani, Yala, Narathiwat and Satun in family and inheritance law, it must be brought Islam came into force. This is the only exception It is only 4 provinces As for the other provinces, it will use the same law, including four provinces as well. Such as the Civil and Commercial And so the tradition is what society accepts and practices of the people. For example, in China, it has been tradition of philosophers like Confucius as a guide to legislators. Odds case or ancient Shinto was used as a guide to legislators in Japan as well, etc.