Mullahs with varying levels of training lead prayers in mosques, deliver religious sermons, and perform religious ceremonies such as birth rites and funeral services. They also often teach in a type of Islamic school known as a madrasah.

What is a mullah person?

: an educated Muslim trained in religious law and doctrine and usually holding an official post.

What is mullah in Iran?

A mullah (from the Arabic word mawlā, meaning "master" or "lord") technically means a learned person with public functions of teaching and preaching in the community. ... Shīʿite mullahs have continued to play a leading role in the social and political transformation of Shīʿite communities in Iran, Iraq, and Lebanon.