Shi‘ites (or Shi‘is) are adherents of Shi‘ite Islam (also referred to as Shi‘a Islam or Shi‘ism), and make up the second largest sect of Islam with an estimated 10-20% of the total Muslim population worldwide.^{[1][2][3][4][5]}

The historic background of the Sunni–Shi'ite split lies in the schism that occurred when the Islamic prophet Muhammad died in the year 632 AD, leading to a dispute over succession to Muhammad as a caliph of the Islamic community spread across various parts of the world which led to the Battle of Siffin.

According to this Shi'ite view, Ali is the singular, rightful successor of Muhammad in his role as leader of the Muslim community, not only ruled over the community in justice, but also as the interpreter of Shari'ah law and its esoteric meaning. Hence he was regarded as being free from error and sin (infallible), and appointed by Allah by divine decree (nass) to be the first Imam.

Shi'ites allow for the combination of the five prayers into three prayer times; morning, afternoon and night. The five prayers are still proscribed however these combinations are allowed with regard to time constraints on the believer's day.

Shi'ites, as with the Sunnis, also follow the Qur'an and Sunnah. Shi'ites have their own form of hadith which only they follow, largely based on sermons by Ali, Al-Kafi and Nahj al-Balagha being seen as the most reliable.^[6] Shi'ite fiqh (according to a fatwa by Al-Azhar, the most respected authority in Sunni Islam)^[7] is accepted as a fifth school of Islamic thought.