The first session of the first Constituent Assembly of Pakistan was held on 10th August 1947 at Sindh Assembly Building Karachi. On 11th August 1947 Quaid-i-Azam Muhammad Ali Jinnah was elected unanimously as the President of the Constituent Assembly of Pakistan and the National Flag was formally approved by the Assembly.
On 12th August 1947, a resolution was approved regarding officially addressing Mr Muhammad Ali Jinnah as “Quaid-i-Azam Muhammad Ali Jinnah”( The Great Leader). On the same day, a special committee called the “Committee on Fundamental Rights of Citizens and Minorities of Pakistan” was appointed to look into and advise the Assembly on matters relating to fundamental rights of the citizens, particularly the minorities, with the aim to legislate on these issues appropriately. On 14th August 1947, the Transfer of Power took place. Lord Mountbatten, Governor General of India, addressed the Constituent Assembly of Pakistan. The Quaid gave a reply to the address in the House, on which the principles of the State of Pakistan were laid. On 15th August 1947, Quaid-i-Azam was sworn in as the first Governor General of Pakistan. Mian Sir Abdur Rashid, Chief Justice of Pakistan, administered oath of office from him. The Quaid remained in this position till his death i.e.11th September 1948.(Source National Assembly of Pakistan)