"In my observation, there are many differences among people with regard to civil law (literally: “in the matter of the dine”), not only among the various religions, languages, and nations, but also within the same religion, nation, and language—for example, within Christianity.
While the Jews everywhere have the same law, and likewise the heresy of the Magian religion, and likewise our present rulers (Islam), among Christians the laws that prevail in the Roman lands differ from those in the Persian lands, and the latter again differ from those in the land of the Arameans.
The laws are different in Susiana (Ahwāz), different in Mesene (Maisān), and different in other lands. From district to district, and from city to city, many differences in civil law can be demonstrated.
And although the religion of Christianity is everywhere the same, civil law is neither one single law nor the same everywhere (see Atim). We shall discuss the cause of this difference later."