You seem to be right.
Shahjalal came from Konya. Sultan of Bengal Firoz Shah conquered Hindu land Sylhet from King Gour Govinda in 1303. Since then it gratually became an Islamic holy land of India , later Pakistan and eventually became part of Bangladesh.
Conquest of Sylhet
Main article:
Conquest of Sylhet
In 1303 the
Sultan of
Bengal,
Shamsuddin Firoz Shah was engaged in a war with the neighbouring kingdom of
Sylhet, then under the rule of the
Hindu king Gour Govinda. This war began when Burhanuddin, a Muslim living in Sylhet sacrificed a cow for his newborn son's
Aqiqah or celebration of birth.
[6] According to tradition, Govinda learned of this sacrifice when a piece of beef from the cow was picked up by a bird which was then dropped on the King's personal temple. Govinda, in a fury for what he saw as sacrilege, had the newborn killed as well as having Burhanuddin's right hand cut off.
[7]
When word of this reached Firoz Shah, an army commanded by his nephew Sikander Khan was sent against Gour Govinda. Two successive strikes were attempted, both ending in failure due to the Bengali armies inexperience in the foreign terrain as well as Govinda's superior military strategy.
[8][9]
A third attack, now under the additional leadership of Firoz Shah's
Sipah Salar (Commander-in-Chief)
Syed Nasiruddin was undertaken, a force which was joined by Shah Jalal and his companions who at this point numbered 360.
[10] Shah Jalal, who had immediately prior to this been a guest of the Sufi saint
Nizamuddin Auliya in
Delhi, may have been summoned by Firoz Shah for aid after the initial failed attacks against Gour Govinda. Alternatively he may already have been present in Sylhet, fighting against the Hindu king independently prior to being approached by the Sultan.
[10][11]
The army was then guided through Sylhet by Burhanuddin, ultimately arriving at the banks of the
Barak River. Here the third battle was fought between Gour Govinda and the combined armies of Shah Jalal and Syed Nasiruddin, with the latter forces ultimately claiming victory. Govinda was forced to retreat and Sylhet was brought under Muslim control. According to tradition, Shah Jalal at this point compared the soil in Sylhet with that which was previously given to him by his uncle, finding them to be identical. In any case, following the battle he, along with his followers permanently settled in Sylhet.
https://en.wikipedia.org/wiki/Shah_Jalal
