In the year 1680 CE, emperor Aurangazeb appointed Zamindars of Bihar named Syed Reza, Syed Tahir and Syed Abdur Rahman (three brothers) as care takers of the Mazhars and Mausoleums of Mahasthan Garh and awarded some lands for that purpose. This award letter, written in Persian and inscribed on Bronze is still available with Shibganj resident Mashqurul Alam Chowdhury. In this "Farman" or "Sanad" emperor Aurangazeb referred to this place as "Astana" of Sultan Mahmud Mahisawar and not as a Mazhar. This makes some historians believe that this is not his mazhar but was his astana.
On the Southern gate entrance wall to the so called Mazhar is engraved in Bangla: "Narshingh Roy Dashoshho" meaning "Subject". Now the question is who is this "Narshingh" and who is he subject of? Half mile North West of the Garh lies the houses, locally known as the palace of Porshuram...