Hazrat Shah Niyamatullah's Shrine, located in Tahakhana Complex, just half a kilometer away from Chhota Sona Mosque in Shibganj Upazila of Chapainawabganj District, is well known as an ancient monument of Mughal architecture. Hazrat Shah Syed Neemat Ullah (RA) is one of the famous saints of the 16th century. He was a descendant of the world prophet Hazrat Muhammad (PBUH) and was a manly saint, scholar and spiritual master. During the reign of Sultan Shah Shuja, he traveled from Karonia in Delhi to various places and arrived at the Rajmahal of Ferozepur. Bengal Sultan Shah Shuja received him with great honor and took the oath of allegiance. Later he established a permanent Asthana on the outskirts of Gaur in Ferozepur and propagated Islam with reputation for 33 years. After his death in 1075 to 1080 Hijri, he was buried at this place.
30-35 meters north of the tahakhana, the mausoleum of Shah Niamat Ullah, surrounded by the mosque wall, is a domed building standing on high bricks. Each side of this mausoleum is 49 feet long and has a square design surrounded by a wooden and brick wall. The tomb has a total of 12 arches, 3 each on the east, west and south sides. That is why this Mazar Sharif is called Barduari. The main room of the mausoleum is surrounded by a wide balcony, decorated with various flowers, foliage plants. It is believed that there are graves of servants and family members of Hazrat Shah Syed Neemat Ullah (RA) in the tomb premises.
On the day of birth and death of Hazrat Shah Niamat Ullah, every year on the first day of Muharram, Orash is celebrated in this shrine. According to legend, Hazrat Shah Neemat Ullah first entered the city of Gaur to preach Islam on the last Friday of the month of Bhadra. For that reason, a different religion Orsha is organized on the last Friday of the month of Bhadra as the auspicious day. All-night dhikr after Asr on Thursday, wearing of the gilaf received by the descendants of Pir Saheb at Hazrat's shrine on Friday Bad Jumma and Milad Mahfil organized in the evening. Every day numerous devotees and visitors from far and wide gather at the shrine of this great saint.