Muhaqqiq al-Hilli (c. 1205-1277), an influential Shi'i Mujtahid born in the city of al-Hilla, Iraq
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Al-Hilli (1250-1325), a Twelver Shi'a theologian and mujtahid
A woman can be a mujtahid and there are dozens who have attained the rank in the modern history of Iran (for instance, Amina Bint al-Majlisi in the Safavid era, Bibi Khanum in the Qajar era, Lady Amin in the Pahlavi era, and Zohreh Sefati during the time of the Islamic Republic).
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Zohreh Sefati and some male jurists believe a female mujtahid can become a marjaʻ, but many male jurists believe a marjaʻ must be male.
Muhammad Salih Baraghani (born 1753) was one of three or four brothers from Baraghan who all established themselves as leading mujtahids in Qazvin.
Mujtahid Bin Hareth Bin Hammaam, or @Mujtahidd, is known for tweeting controversial information about the royal family of Saudi Arabia, especially focusing on Abdul Aziz bin Fahd, the youngest son of the late King Fahd.
Sefati and some male jurists, such as Yousef Saanei, believe a female mujtahid can become a source of emulation (a marja), i.e. that both men and women can perform taqlid (emulation) of a woman mujtahid.