[1] According to the seventeenth-century khyat which contains the history of the Ujjainiyas, noted that in 1389, the sultan of Jaunpur crossed the Karmanasa River and halted in Buxar which is a holy city in Hinduism and received a lot of pilgrims.
The Ujjainiyas were initially successful in driving the Jaunpur Sultanate out of the region however they later returned plundered the city, destroying the temples in the process.
After their defeat, the Ujjainiyas retreated into the hills and forests and continued to harass the forces of the Jaunpur Sultanate.
After the death of Sultan Malik Sarwar in 1399, many Ujjainiyas felt it safe to return from living in the forest.
[4] By the latter half of the 1400s, many Ujjaniyas were paying tribute to the Jaunpur Sultan as the Ujjainiya chief at the time, Durlabh Deva had accepted their suzerainty.