Pilgrims were allowed into the mausoleum on Sunday, according to the Astan’s website.
The move was taken after a decision by the Astan’s Crisis Management Headquarters.
The doors will be open from 7 AM to 6 PM everyday from today, the Astan announced.
Congregational prayers, however, are not held in the mausoleum for the time being due to the coronavirus restrictions.
Abdul Azim Hassani (AS), also known as Shah Abdol Azim, was a fifth generation descendant of Imam Hassan ibn Ali (AS) and a companion of Imam Muhammad Taqi (AS).
His holy shrine in Rey, south of the Iranian capital of Tehran, is a pilgrimage site that attracts millions of pilgrims from across Iran and other parts of the world every year.