Muhammad Baqir Behbahani

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Twelver Shi'ism
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Other beliefs Imamate of the Family Angels Mourning of Muharram Intercession Occultation Wilayat al-Faqih Usul al-fiqh Ijtihad Taqlid Irfan
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Other practices Mourning of Muharram Arba'een Pilgrimage Intercession
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Scholarship Law Marja' (list) Hawza Ayatollah (list) Allamah Seghatoleslam Hojatoleslam Ijtihad
Hadith collections The Four Books Kitab al-Kafi Man La Yahduruhu al-Faqih Tahdhib al-Ahkam Al-Istibsar Other hadith collections Book of Sulaym ibn Qays Bihar al-Anwar Wasā'il al-Shīʿa Reality of Certainty Nahj al-Balagha Mafatih al-Jinan Al-Sahifa al-Sajjadiyya Al-Amali
Sources of ijtihad and jurisprudence Qur'an Hadiths of The Infallibles Consensus Reason
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Muhammad Baqir ibn Muhammad Akmal al-Wahid Bihbahani, also Vahid Behbahani (1706–1791),^[1] was a Twelver Shia Islamic scholar. He is widely regarded as the founder or restorer of the Usuli school of Twelver Shi'a Islam and as playing a vital role in narrowing the field of orthodoxy in Twelver Shi'a Islam by expanding "the threat of takfir" against opposing scholars "into the central field of theology and jurisprudence".^[2]