In the course of the reign of Mughal emperor Jahangir (r. 1606–1627), seven sons of a Yemeni grandee travelled to Bengal to propagate Islam.

He also dug reservoirs known as dighis for the welfare of locals and among the notable ponds are Padmabunia, Goalia and Mali Majhor Andhi.

His gardener would make a necklace out of padma lotuses obtained from Padmabunia Dighi and gift it to Dudh Mallik.

After Dudh Mallik's death, Emperor Jahangir awarded 16 droṇs and 14 kanis of tax-free (lakheraj) land for Hazrat Doodh Kumar's mazar (mausoleum), which also led to Qasba being popularly known as Lakheraj-Qasba.

The Shah family of Qasba serve as guardians of the tomb and claim to have arrived in the region with Dudh Mallik in the 17th-century.

[6] His son, Syed Qutb Shah, first settled in the village of Terachar but relocated to Nalchira due to safer conditions and was awarded with tax-free land from Sabi Khan, the Faujdar of Bakla.

His descendants, the Miah family of Nalchira and the Zamindars of Nazirpur, continued to hold influential positions in the history of Barisal for several centuries.