[5] In a treaty with the Ahom kingdom in 1805, the Moamorias were able to set up an autonomous region, the Matak Rajya, under the office of Borsenapati, with his seat at Bengmara (modern-day Tinsukia).
Aniruddhadev was the disciple of Gopaldev (Gopal Ata of Bhawanipur) who had initiated the Kala sanghati sect of the Ekasarana dharma.
One theory suggests that this name was given by the Ahom king, Prataap Singha, on account of their strict adherence to the monotheism of Ekasarana dharma (in Assamese: mat: opinion, ek: single).
In an incident narrated in some Buranjis, Prataap Singha tested the fanaticism of his own high nobles and officers, who were disciples of the Moamara Sattra, by making them ride their horses against naked swords held at the level of their necks.
A noble, the Guimela Sola Borgohain and an officer, the Neog-Phukan, lost their lives since they refused to bow down and ride under the sword, at which point the test was stopped.