Ayatollah sheikh Muhammad Taqi Isfahani, known as "Najafi", one of the great Iranian scholars in the 20 th century, he was born in 1846 in Isfahan –Iran. His father and grandfather both were prominent Shia scholars. After learning the preliminaries of religious sciences, he travelled to Najaf and studied in the presence of great masters: Mirza Shirazi, sheikh Mahdi Najafi and Seyyed Ali shushtari, then returned to Isfahan. There are left 70 books of him and most of them have been published. Sheikh Muhammad Taqi Isfahani (Najafi) passed away in 1914 in Isfahan.