With the above explanation...

With the above explanation, the baselessness of the speech of some of the ignorant or among the private motives of forgery based on the formation of Shia creed to have come in the later Islamic era, becomes evident of it's falsification. For further knowledge of the Shia's history, refer to the books of 'Asl-Al-Shia wa Usuluha', 'Al-Murajia'at' and 'Aayan Al-Shia.' Another group believed that the position of caliphate is an elected one; therefore, swore allegiance to Abu bakr.

This group were later known as 'Ahl sunnah' or 'Sunnis'. Thus, this finally resulted in the difference between two Islamic sects. However these two sects seem to have many common features between them. The difference in opinion arose regarding the matter of caliphate, and the fact that who is to succeed the Holy prophet. The initial source of conflict was however due to the two very groups of Ansar and Muhajir.

(saffat, 83) Jalal Al-Deen Al-Seuti, Dur Al-Manthur, vol.6, in interpretation of the seventh verse of sura Bayyinah (as for) those who believe and do good, surely they are the best of men.) Question 3. Why is Ali bin Abi Talib the guardian and successor of the Holy prophet?

ANSWER: As we previously mentioned, the Shia have firm belief that the position of caliphate is appointed by God (according to a text) and that Imamate after the honored prophet is similar to prophet hood in some aspects; the guardian has to be appointed by God as was the appointing of the prophets.

The history of the prophet's life certifies this principle; because he had appointed Ali (as) as his successor in several occasions of which we shall mention three instances: During the early period of the prophet hood of the prophet: When the Prophet was commanded as the mission from God to call his relatives inorder to create unity according to the verse "and warn your nearest relations." So he addressed the gathering saying that whosoever supported him in this way, as dictated by Allah, will become the guardian, vizier, and successor to him.

His holiness said the following words: "Who is ready amongst you to support me in this matter so that he be my brother, vizier, guardian and successor?" The only one to give a positive response to this heavenly call was Ali bin Abi Talib (p).