(1) A promise before God, and before his Apostle, his prophets, angels, and envoys, to inviolable secrecy as to all the convert knows about the missionary, about the representative of the Imam in the district where he lives, as well as regarding all other members of the sect. A pledge to accept all the orthodox teachings of Islam, and to observe all its rites, both matters which, as we have seen, were required of the lower grades and disregarded by the higher ones. (2) A pledge to loyalty towards the missionaries and the Imam, and the invocation of the curse of Iblis if this pledge is broken. “If you have any reservation, in will or thought, this oath nevertheless has full binding force upon you, and God will take no satisfaction other than the complete fulfilment of all it contains and of the agreements made between you and me.” This oath, it will be observed, is intended for those initiated into the first grade, and so conforms to the idea of orthodox Islam, though including the Shiʿite doctrine of an Imam, but covers all that is to be taught later with a veil of secrecy. The plan was to adapt the earlier teaching to the beliefs and capacity of the proselytes, and this method is further illustrated by the _kitab as-siyasa_ or “book of policy,” a manual for the guidance of the _duʿat_, which Nuwayri describes on the authority of Abu l-Hasan. According to this the teacher is told to emphasize his zeal for Shiʿite theories if he has to deal with a Shiʿite, to express sympathy with ʿAli and his two sons, and repugnance towards the Arabs who put them to death. If he has to deal with a Sabian, emphasis was laid on the reverence paid to the numeral seven. If his conversation was with a Zoroastrian, his principles are at the basis very similar to those of the Ismaʿilians, and with him the _daʿi_ may commence at the fourth grade. If his business is with a Jew, he should explain that the Mahdi Muhammad b. Ismaʿil is the Messiah expected by the Jews and speak much against the Muslims and Christians, especially about their erroneous beliefs as to the unique birth of Christ, making it plain that Joseph the carpenter was undoubtedly his father. With Christians, on the contrary, it is advised to speak ill of the Muslims and Jews, explaining that the Ismaʿilians recognise the Christian creed, but giving it an allegorical interpretation, and showing that the Paraclete is yet to come, and is the true Imam to whom they are invited to come. In dealing with dualists or Manichaeans the _daʿi_ may begin at the sixth grade of initiation, or if the convert seems worthy of confidence, the whole doctrine may be revealed at once. With one of the “philosophers” who, in true Muslim fashion, are treated as a distinct sect, emphasis is to be laid on the fact that the essential points of the Ismaʿilian faith are based on the teachings of philosophy, and the sect agrees with them in everything concerning the prophets and the eternity of the world; but some of the