In Twelver Shiism on the other hand, the term Irfan refers specifically to gnosis that can be revealed strictly within the confines of Islam. Among the most famous modern Shia proponents of Irfan were Usuli theologians Allāmah Tabatabai, Ruhollah Khomeini, Mohammad-Taqi Bāhjat, and Allāmah Qādhi Tabatabai. The scholars taught how gnosis can be attained by adhering to Islamic teachings with love for God.