 He was the first Muslim Graduate in the Cox's Bazar district.At the age of thirty, Fazlul married Nazmunnisa Chowdhurani, elder daughter of Zamindar Akbar Ahmed Chowdhury and granddaughter of Kiwk Zamindar Fazal Karim Chowdhury of Manikpur, Chakaria, Cox's Bazar in 1935.She gave birth to their four sons — Murad B.Z.