Meaning of Imamate and Khilafah, as well as Shi'i and Sunni views on topics such as necessity of Imamate, infallibility, and Shura. World Organization for Islamic Services (WOFIS) Imamate, The Vicegerency of the Prophet (S) 1. Meaning of Imamate and Khilafah 4. System of Islamic Leadership Part 2: The Shi'ite Point of View 5. The Necessity of Imamate and the Qualifications of an Imam 9. Verses of mastership ( wilayah) 10. The formal declaration of Ghadir Khum III. General Meanings of Mawla: IV. Meaning of "Mawla" in the Context 14. Ulu 'l-Amr: does it mean Muslim ruler? 17. Few facts about the twelve Imams(a) Part 3: The Sunni Point of View 18. Sunni views on the caliphate 27. Al-Walid and Harun Ar-Rashid 28. Effects on the beliefs of the justice of God and 'ismah of the prophets