Mr. Muhammed Hashim Gazdar was among the Legislating members who represented Sindh in the first session of Pakistan 's initiating Constituent Assembly that was convened four days prior to the emergence of Pakistan i.e. the 10th August , 1947 at Sindh Assembly Building , Karachi . Mr. Muhammed Hashim Gazdar was among the Legislating members who represented Sindh in the first session of Pakistan 's first Constituent Assembly , convened for the purpose of legislation in Sindh Assembly Building , Karachi on 10 August , 1947 , four days before Pakistan 's independence and formation was imminent .