Murtaḍā Ḥāʾirī Yazdī was an Imami scholar and jurisprudent. Born in Arak, his father was Shaykh 'Abd al-Karim Ha'iri. Murtada Ha'iri Yazdi was the founder of 'Alavi Saving Bank in Qom and a member of Constitution's Assembly of Experts after the Islamic Revolution of Iran.

Education
He learned literature in Qom as a student of Muhammad 'Ali Adib Tihrani and Shaykh Abu l-Qasim Nahvi. After finishing the basics of Fiqh and Usul, he studied the advanced levels with teachers like Sayyid Muhammad Taqi Khwansari, Muahmmad Rida Golpaygani and Sayyid Muhammad Muhaqqiq Yazdi.

He was a student of his father for a while and after the demise of his father, he spent about 15 years as a student of his father-in-law –Sayyid Muhammad Hujjat Kuhkamara'i- and Sayyid Ahmad Khwansari.

He was among those who tried to persuade Ayatollah Husayn Burujirdi to move to Qom, and then he participated in his classes for a period of time.

He studied the Ilahiyat part of the book Asfar by Sadr al-Muta'allihin under a private tutor and completed studying the book by reading alone and going to Imam Khomeini for questions and further information.

Ijtihad and Teaching
Ha'iri had Ijtihad certificate from two marja's – Sayyid Abu l-Hasan Isfahani and Aqa Dia' al-Din 'Iraqi, and after years of teaching basics and advanced levels of Seminary, he started teaching Kharij Fiqh and Usul from the age of 30 and he kept teaching for about thirty years. He was one of the outstanding teachers of Seminary and famous for being accurate and having deep thoughts. He trained many students, some of whom later became great teachers of Seminary by themselves.

Besides teaching Fiqh and Usul, Ha'iri also had lessons in Qur'an exegesis and theology. 

Moral Characteristics

Ha'iri was a pious, humble, light-hearted scholar and tried hard to solve the problems of people. His congregational prayer in A'zam Mosque of Qom was held with special magnificence and spirituality.

He paid special attention to honoring the religious rituals, including the pilgrimage to the holy shrines and holding sessions of mourning for Ahl al-Bayt (a).

Social and Political Activities
Among his social activities and charity works in Qom are the foundation of 'Alavi Saving Bank, Anti-Poverty Organization and Orphan Care Organization. 

After the Islamic Revolution of Iran he was chosen as the representative of Markazi Province in the Constitution's Assembly of Experts.

Demise
Ha'iri passed away in the night of Jumada II 24, 1406 (March 6th, 1986). After his funeral Sayyid Muhammad Rida Golpayigani prayed for his body and he was buried in Balasar Mosque in the Holy Shrine of Lady Fatima al-Ma'suma (a), next to the grave of his father Shaykh 'Abd al-Karim Ha'iri.