SHIA AND SUNNI
shia are the largest minority denomination (10-20%) based on the Islamic faith after Sunni Islam. Shias adhere to the teachings of Islamic prophet Muhammad and the religious guidance of his family (who are referred to as the Ahl al-Bayt) or his descendants known as Shi'a Imams, whom they consider to be infallible. Shia's assert the right of Ali ibn Abi Talib (Muhammad's cousin and husband of Fatimah) as successor to Muhammad
both are Muslims following different fiqa.they both practice the Islamic values but see hadith and quran from different perspective
Sunni Muslims are the largest denomination of Islam. Sunni Islam is also referred to as Sunnism or as Ahl as-Sunnah wa’l-Jamā‘h (people of the example (of Muhammad) and the community) which implies that they are the majority, or Ahl as-Sunnah for short. The word Sunni comes from the word Sunnah, which means the words and actions or example of the Prophet of Islam, Muhammad. They represent the branch of Islam that accepted the caliphate of Abu Bakr due to him being chosen by Shurah. Shurah over the caliphate is the first distinguishing factor of Sunni Islam.
Sunni Islam and Shia Islam are the two major denominations of Islam. Approximately 85% of Muslims are Sunni and 15% are Shi'a, with a small minority belonging to other sects. Shi'a Muslims are the majority in Iran, Iraq, Lebanon and Yemen, countries considered to be the cradles of civilization. Sunnis are a majority in Indonesia and in African and Indian Muslim communities. The historic background of the Sunni-Shia split lies in the schism that occurred when the Islamic prophet Muhammad died in the year 632, leading to a dispute over succession to Muhammad as a caliph of the Islamic community spread across various parts of the world.
Over the years Sunni-Shia relations have been marked by both cooperation and conflict. Today there are differences in religious practice, traditions, and customs in addition to religious belief.
The Shia believe that Muhammad divinely ordained his cousin and son-in-law Ali (the father of his only two grandsons Hasan ibn Ali and Husayn ibn Ali) in accordance with the command of God to be the next caliph, making Ali and his direct descendants Muhammad's successors. The Sunnis hold that Abu Bakr was Muhammad's rightful successor and that all caliphs should be chosen by consensus of the Ummah, Muslim community, and that this method of choosing or electing leaders (Shura) is endorsed by the Qur'an. The meeting of Saqifah, however, during which Abu Bakr was elected, was held secretly immediately after the death of the prophet, with Ali and the prophet's closest Sahaba excluded.
Sunnis follow the Rashidun (rightly-guided caliphs), which were the first four caliphs who ruled after the death of Muhammad (Abu Bakr, Umar, Uthman Ibn Affan, and Ali). Shias discount the legitimacy of the first three caliphs and believe that Ali is the second-most divinely inspired man (after Muhammad) and that he and his descendants by Muhammad's daughter Fatimah, the Imamah (Shia imans) are the sole legitimate Islamic leaders.
A rift also still exists between Sunnis and some small Shia branches who curse Aisha (RA) and the first three Caliphs. Sunnis strongly disagree with this practice. Mainstream Shias do not consider the cursing of the first three caliphs as a sin, but neither do they consider it helpful to the Shia cause, and hence do not endorse it.
Most Sunni and Shia believe that the Mahdi will appear at end times to bring about a perfect and just Islamic society. Twelver Shia believe the Mahdi will be Muhammad al-Mahdi, the twelfth Imam returned from occultation where he has been hidden by God since 874 AD. Sunni do not accept this.
The Shias accept most of the same hadiths used by Sunnis as part of the Sunna and to argue their case. In addition they use hadith narrated by the Ahl al-Bayt (the prophet's family through Ali), that Sunni do not consider hadith. Some Sunni-accepted hadith are less favored by Shia, for example, because of Aisha's opposition to Ali (whom they believe to have been divinely appointed by Mohammad), hadith narrated by Aisha are not given the same authority as those by other companions.