Education

At first, Ayatollah Yazdi learned Persian language from his father and then went to Maktab. Also he departed to newly founded school to continue his education. When he went to Qom, he resided at the Feyziyeh School and learned religious courses from scholars such as Mohammad Ali Araki, Ayatollah Sheikh Muhammad Taqi Amoli, Ayatollah Shahroudi, Grand Ayatollah Hossein Borujerdi and Ruhollah Khomeini.^[5]

Before victory of Iranian Revolution

Ayatollah Yazdi usually gave the lectures at mosques and house of scholars. Also he taught Morality course at the Feyziyeh School and discussed politic subjects.^[6] Mohammad Yazdi was exiled by SAVAK many times to Bandar Lengeh, Bushehr and Rudbar.^[5]

After victory of Iranian Revolution

After Ayatollah Khamenei became leader of the Islamic Republic, Ayatollah Yazdi served as the president of the Supreme Court. He remained in the post for many years before being replaced by Muhammad Hashemi Shahroudi.^[7] Yazdi was a member of the Assembly of Experts^[2] and the Guardian Council. He served as the interim Friday prayer leader of Tehran.

This is some of the political career of Ayatollah Yazdi after The Islamic Revolution as follows:^[6]

• Management of Imam Khomeini's Office in Qom
• Member of the dispute resolution council between Mohammad-Ali Rajai and Abolhassan Banisadr^[8]
• Member of the Assembly of Experts constitution in 1979
• Temporary Tehran's Friday Prayer Imam, 1982 to late 1990s
• Chief Justice of Iran 1989 to 1999
• Member of the Assembly of Experts, 1991 to 2016
• Member of Iranian Parliament from 1980 to 1988 in Qom and Tehran
• Vice chairman of Iranian Parliament in the first and second periods
• Member of Guardian Council in the periods of the second, fourth, fifth, sixth and seventh
• One of the founders and secretary of Society of Seminary Teachers of Qom

United States

In the run-up to the February 2016 elections, Yazdi opposed bilateral relations with the United States.^[9] In the popular election held in February 2016 for Assembly of Experts candidates, incumbent Chairman Yazdi was not among the 16 experts who received enough votes to represent Tehran in the Fifth Assembly of Experts.^[10]

Many western media outlets pointed to Yazdi's exit from the Assembly when providing and emphasizing the gains that reformists made in the 2016 elections.^{[11][12][13][14][15]} In a speech congratulating those elected to the Fifth Assembly of Experts, Yazdi advocated for peaceful, moderate relations with other countries, but went on to warn about dealing with enemies and characterized America as "The Great Satan".^[16] Two days later, Fars News Agency reported the Supreme Leader Ayatollah Khamenei lamented the Assembly's loss of Yazdi as Chairman and warned of the risk that the West could influence or infiltrate Iran.^[17] As of 9 May 2016, Yazdi remained on the Guardian Council,^[18] which vets potential candidates for the Assembly of Experts. During Yazdi's tenure on the Guardian Council, human-rights organizations have criticized the Guardian Council's disqualification of reform candidates in the 2016 elections.^[19][20]