Adhan, Hymns & Liturgical Texts The Twelver call to prayer adds the summons to the best of deeds, and commonly the testimony to Ali, to the phrases the Sunni schools use.
Ashura, Holidays & Festivals The tenth of Muharram is kept in Twelver practice as the mourning of the killing of Husayn at Karbala, with lamentation assemblies and processions, rather than as the recommended fast the Sunni schools observe.
Asr, Practices Joined with the noon prayer in ordinary Twelver practice rather than kept to its own separate time.
Dhuhr, Practices Twelver law permits the noon and afternoon prayers to be joined at one sitting, so the five daily prayers are commonly performed at three times of day.
Hajj, Rituals Twelver law makes the tamattu form of the pilgrimage binding on those who live outside the sacred precinct, where the Sunni schools leave the choice among the three forms open.
Halal, Practices Jafari law requires that a fish bear scales, and excludes the shellfish and crustaceans that the Maliki, Shafii and Hanbali schools permit.
Imam, Religious Roles & Titles Imam in Twelver usage names the twelve designated successors of the Prophet before it names the leader of a congregation.
Iqama, Hymns & Liturgical Texts The Twelver call to rise carries the same additional phrases as the call to prayer, and adds the summons to the best of deeds twice.
Isha, Practices Joined with the sunset prayer in ordinary Twelver practice rather than kept to its own separate time.
The opening of Muharram begins the Twelver mourning season for Karbala rather than a new year observance.
Khitan, Rituals Circumcision is an obligation in Jafari law rather than a recommended custom.
Mid Shaban is kept in Twelver practice as the birth of the twelfth Imam rather than as a night of decree.
Twelvers keep the night of power over the nineteenth, twenty first and twenty third nights of Ramadan. The nineteenth is also the night Ali was struck in the mosque at Kufa.
Maghrib, Practices Joined with the night prayer in ordinary Twelver practice, and begun at true nightfall rather than at sunset.
Mawlid, Holidays & Festivals Twelvers keep the birth of the Prophet on 17 Rabi al-Awwal rather than the 12th, and the week between the two dates is observed in Iran as a week of unity.
Nikah, Rituals Jafari law holds the fixed term marriage, mut'a, valid alongside permanent marriage, where the Sunni schools regard it as abrogated.
Twelvers prostrate on bare earth or on a tablet of clay, the turba, commonly taken from Karbala and laid on the rug rather than prostrating on its pile.
Salat (Daily Prayer), Rituals Twelvers pray with the arms at the sides rather than folded, and prostrate on bare earth or on a tablet of clay rather than on the pile of the carpet.
Salat al-Janazah, Rituals The Twelver funeral prayer is made with five pronouncements of the takbir rather than four, the additional one carrying the invocation on the Family of the Prophet.
Sawm (Fasting), Rituals The Twelver fast is broken at true nightfall rather than at sunset, so the evening meal falls later than in Sunni practice.
Shahada, Mantras The Twelver testimony commonly carries a third clause naming Ali as the friend of God.
The Twelver testimony commonly adds a third clause naming Ali as the friend of God, recited alongside the two clauses the Sunni schools require.
Consultation has a place in Twelver political thought but none in designating the Imam, whose office rests on designation and not on the agreement of the community.
Tasbih, Mantras The Twelver rosary follows the tasbih of Fatima, thirty four pronouncements of God's greatness, thirty three of praise and thirty three of glorification, taught by the Prophet to his daughter.
The Five Pillars, Practices Twelver law sets out its obligations as ten branches of religion rather than five pillars, adding khums, jihad, commanding right, forbidding wrong, and loyalty to the Family of the Prophet.
The Baqi cemetery beside the Prophet's Mosque holds the graves of four of the Twelve Imams. Its shrines were demolished in 1925 and Twelvers mark the anniversary as a day of sorrow.
Twelver scholarship treats the canonical readings as the transmissions of named reciters rather than as seven revealed forms of the text, while reciting in the transmission of Hafs like most of the Muslim world.
Witr, Practices The Witr in Twelver practice is the closing unit of the night prayer rather than a separate prayer of near obligatory rank after Isha.
Wudu (Ablution), Rituals In Jafari ablution the head and the feet are wiped with the moisture left on the hand rather than washed, and the arms are washed downward from the elbow.
Zakat, Practices Zakat in Jafari law falls on nine specified categories of wealth and stands beside khums rather than covering surplus wealth generally.
Zakat al-Mal, Practices Jafari law levies zakat on nine named categories, four crops and three livestock and the two coined metals, rather than on wealth in general.
Jihad, Doctrines Jihad is a chapter of Jafari law, and the school holds that offensive jihad requires the Imam, which in the occultation means it is suspended and only the defensive form remains.
Usul al-fiqh, Doctrines Admits aql, reason, in the place analogy occupies in Sunni theory, and restricts consensus to the agreement that discloses the position of the imam.