Agastheswar Mahadev is worshiped in Ujjain in Madhya Pradesh. It is one of the 84 forms of Shiva worshiped in Ujjain. Those offering prayers to Agastheswar Mahadev will get sin redemption. They will also have their desires fulfilled.
The temple dedicated to Agastheswar Mahadev is located on the premises of old Santoshi Mata mandir behind Harsiddhi temple complex in Ujjain.
This form of Shiva is associated with Sage Agasthya
Agastheswar Mahadev is counted among the 84 Shiva Temples in Ujjain and it is the 1st temple visited during the parikrama of Shivalayas here.
Story of Agastheswar Mahadev form of Shiva in Ujjain
Legend has it that once demons threw Devas (demigods) out of heaven. Devas were roaming on earth and here they met Sage Agastya. When the Sage heard about the plight of Devas he became extremely furious.
A huge fireball appeared due to the anger of Sage Agastya and it started burning down the demons in heaven. The fire also hurt several other living beings.
Sage Agastya repented his action. On the advice of Brahma, the Sage went to Mahakaal Vana (present day Ujjain) and did penance before a particular Shivling.
Shiva was pleased with austerities and penance done by the Sage. He appeared and blessed him. He also told the sage that the Shivling would be henceforth known as Agastheswar Mahadev.