“Indeed Abraham was among his followers {Shiâ€کah}.â€‌[32][36]
But the Muslims use the word “Shiâ€کahâ€‌ to mean the group of people who believe that prior to his demise, the Prophet (S) had designated his successor and the caliph of the Muslims in numerous occasions such as the day known as “Ghadirâ€‌ on Dhu’l-Hijjah 18, 10 AH and in a mammoth assembly (of Muslims) he (S) appointed him as the political, intellectual and religious authority after him (S).
To elucidate, after the Holy Prophet (S), the Muhajirun[33][37] and the Ansar[34][38] were divided into two groups:
1. A group believed that the Prophet of Allah (S) did not ignore the question of caliphate and he designated â€کAli ibn Abi Talib (â€کa)—the first person who believed in him (S)—as his successor.
This group is composed of Muhajirun and Ansar with all the leading figures of the Bani Hashim[35][39] and a number of great Companions {sahabah}[36][40] such as Salman al-Farsi, Abu Dharr, Miqdad, Khabbab ibn Art, and the like. They remained firm in their belief and were called the “Shiâ€کah of â€کAli (â€کa)â€‌.
Of course, this appellation has been given by the Holy Prophet (S) himself during his lifetime to the followers of the Commander of the Faithful (â€کa). While pointing to â€کAli ibn Abi Talib (â€کa), he said:

“By Him in Whose hand my life is, verily this man (â€کAli) and his Shiâ€کah shall be the triumphant on the Day of Resurrection.â€‌[37][41]
Therefore, “Shiâ€کahâ€‌ means a group of Muslims of the early period of Islam who, on account of the belief that wilayah {guardianship}[38][42] is based on revelation {tansisi}, are given this appellation, and this group has remained faithful to the Prophet’s Household {Ahl al-Bayt} (â€کa) until today.
From this, we realize the station and position of the Shiâ€کah, and in this way the groundless statement of some ignorant or spiteful concocters who claim that Shiâ€کism is a product of the later periods, becomes clear. For further information on the history of the Shiâ€کah, one may refer to such books as Asl ash-Shiâ€کah wa Usuluha, Al-Murajaâ€کat, and Aâ€کyan ash-Shiâ€کah.
2. Another group believed that the station of caliphate is an electoral position. As such, they paid allegiance to Abubakr and later on, they were known as the “Ahl as-Sunnahâ€‌ or “Sunniâ€‌.
The result was that notwithstanding the fact that these two Muslim sects have so many common views about the roots of religion, they have different attitudes toward the question of caliphate and succession to the Prophet. The members of each of the two groups were from among the Muhajirun and Ansar.