The 12 Imams — Their Lives, Knowledge and Legacy

Twelver Shia Islam holds that after the Prophet (ﷺ) guidance continued through twelve divinely appointed Imams from his household. Sunni tradition does not accept Imamah as a creedal office, but the great majority of Sunni scholars revere these figures as scholars and saints, and Sunni chains of transmission and Sufi lineages pass through several of them.

The twelve

1. Ali ibn Abi Talib (d. 40 AH) — caliph, judge, author of the sermons and letters of Nahj al-Balagha.
2. Hasan ibn Ali (d. 50 AH) — negotiated the treaty with Mu'awiyah to stop Muslim bloodshed.
3. Husayn ibn Ali (d. 61 AH) — martyred at Karbala refusing allegiance to Yazid.
4. Ali ibn al-Husayn, Zayn al-Abidin (d. 95 AH) — author of al-Sahifah al-Sajjadiyyah and the Risalat al-Huquq on rights.
5. Muhammad al-Baqir (d. 114 AH) — "the splitter open of knowledge"; teacher of a generation of jurists.
6. Ja'far al-Sadiq (d. 148 AH) — founder of the Ja'fari school of law; taught thousands, including Abu Hanifah and Malik ibn Anas.
7. Musa al-Kazim (d. 183 AH) — "the forbearing"; died in Abbasid imprisonment in Baghdad.
8. Ali al-Rida (d. 203 AH) — nominated heir apparent by al-Ma'mun; buried in Mashhad.
9. Muhammad al-Jawad (d. 220 AH) — reached the Imamate as a child; famed for debates with jurists.
10. Ali al-Hadi (d. 254 AH) — held under surveillance at Samarra; author of Ziyarat al-Jami'ah.
11. Hasan al-Askari (d. 260 AH) — taught under house arrest in Samarra.
12. Muhammad al-Mahdi — believed to be in occultation, to appear to fill the earth with justice.

The shared intellectual legacy

Ja'far al-Sadiq's circle is a documented meeting point of Sunni and Shia scholarship. Zayn al-Abidin's supplications are read across the Muslim world. Al-Rida's shrine city became a centre of learning for all schools.

Where the schools differ

Shia doctrine holds the Imams infallible (ma'sum) and divinely designated. Sunni doctrine holds them righteous scholars and descendants of the Prophet deserving love, without infallibility or binding authority. Salafi scholarship affirms their piety while rejecting infallibility, intercession through them, and shrine veneration.

References across the schools

• Shia: al-Kulayni, al-Kafi, Kitab al-Hujjah; al-Mufid, al-Irshad; al-Saduq, Kamal al-Din; al-Majlisi, Bihar al-Anwar.
• Sunni: Sahih al-Bukhari 7222 and Sahih Muslim 1821 ("twelve leaders, all from Quraysh"); Ibn Hajar al-Haytami, al-Sawa'iq al-Muhriqah; al-Dhahabi, Siyar A'lam al-Nubala (entries on al-Baqir, al-Sadiq, al-Rida).
• Salafi/Wahhabi: Ibn Taymiyyah, Minhaj al-Sunnah, on the twelve report and its interpretation.