Ahmad ibn Muhammad Ardabili  Ahmad ibn Muhammad Ardabili () was a Shia Grand Ayatollah of jurisprudence. After the death of Zayn al-Din al-Juba'i al'Amili, he became the Marja' of the Twelver Shia in Najaf, Iraq. He is known by the titles of "Mohaghegh" and "Muoghaddas". Ahmad was born in the Safavid era (16th century) in Ardabil, Azerbaijan in Iran. He moved to Najaf and continued his education. He moved to Shiraz to study philosophy under Jamal al-Din Mahmud, a student of Jalaladdin Davani. Mohaghegh studied intellectual sciences and Fiqh in the seminary of Najaf. He gave up teaching intellectual subjects during the last years of his life and taught narrative sciences at Najaf. The seminary of Najaf thrived under his management. Ahmad ibn Muhammad Ardabili was called "Mohaghegh" (researcher) by other scholars because of his skills. He was also called "Moghaddas" (saint) by those close to him. The Safavid dynasty sent a message by Bahāʾ al-dīn al-ʿĀmilī and requested Ardabili to move to Iran from Najaf. Although, he refused Shah Abbas Safavi's request to move to Iran, he remained connected with the Safavid court. He resolved problems of Shiites by writing letters to the Safavid kings. He also played an important role in spreading Shia religion during the Safavid era. Mohaghegh Ardabili wrote scholarly works on Fiqh, the intellectual sciences, Principles of Islamic jurisprudence, theology, and Ahl al-Bayt's life. He also wrote one of the major Shia Quran commentaries. He wrote several books in Persian as Proof of the Imamah, Proof of the Vejeb, Manasek of Hajj. His works include  Ahmad ibn Muhammad Ardabili died in 1585 (993 AH) and was buried in Imam Ali Mosque in Najaf. In 1978, University of Mohaghegh Ardabili (UMA) was established in Ardabil and named in honour of Ahmad ibn Muhammad Ardabili.