When the day of freedom was approaching near, the Constituent Assembly elected Quaid-e-Azam (Rahmatullah) as President on August 11, 1947. Chief Justice Sir Abdur Rashid took oath from Quaid-e-Azam (Rahmatullah). Originally, the Constituent Assembly consisted of 69 members. Afterwards, this number was increased to 79.

Moulvi Tameez-ud-Din was appointed as the first speaker of the Assembly. A provisional constitution was adopted with some modifications in the Indian Act of 1935 until the new constitution was introduced. According to this constitution, the Federal System was launched in the country. Under provisional Constitution, the Constituent Assembly that also had the role of Central Parliament was summoned for its first session.