Other men, such as Tabari, the historian and commentator, have had dreams that they, too, might join the Four Imams (see IMAM) as founders of legal rites, but none has succeeded. The Four remain the ultimate exponents of this canon law, and under the banner of one or other of them every Moslem must range himself. As there is a principle of unity in Islam, expressed in the alleged prophetic saying, "My people will never agree in an error," so there is a principle of variety, also expressed in an alleged prophetic saying, "The disagreement of my people is a mercy from God." The four rites may differ upon many points, yet the adherents of one never dream of regarding the adherents of the others as outside the Church of Islam; they are not "dissenters" in the English sense. God is merciful to his creatures, and gives them so much liberty of choice. Yet in practice this liberty is not great. The principle of swearing to the words of the master is a dead hand laid upon Islam. A man's legal rite is generally settled by the place and other conditions of his birth, and after he has once accepted a rite, he must, if good and pious, follow it in all its details. Only the avowed sceptic or the recognized eccentric can be an eclectic. The geographical distribution of the rites is roughly as follows: Moslems in Central Asia and northern India and the Turks everywhere are Hanifites; in Lower Egypt, Syria, southern India and the Malay Archipelago they are Shafi`ites; in Upper Egypt and in north Africa, west of Egypt, they are Malikites; only the Wahhabis (q.v.) in central Arabia are Hanbalites. But the will of the sovereign has also had a powerful influence and has frequently dictated the legal, as well as the theological, affiliations of his subjects. The Turks, for example, have thrown their weight almost everywhere on the Hanifite side. Their policy is to appoint only Hanifite judges (see CADI), although for private and personal questions they appoint and pay Muftis (q.v.) of the other rites. In other cases, with a population of mixed legal adherence, the government has been known to appoint judges of different rites.