Mahmud was born in Akyab in 1900. He was educated in Calcutta.
Political career
When Burma was a part of British India, Mahmud held the important post of cabinet secretary in the Central Legislative Assembly in New Delhi. During a by-election in 1957, Mahmud was elected to the Union Parliament from Buthidaung North constituency. He was appointed health minister in the cabinet of Prime Minister of BurmaU Nu. Mahmud was re-elected during the 1960 Burmese general election. During his tenure as health minister, several hospitals were established in Arakan, including the Akyab General Hospital and Buthidaung Hospital. As an MP, Mahmud persuaded the education ministry to establish several schools, including the Shaheb Bazaar State Middle School and Minglagyi State Middle School. He also managed to create a scholarship program for Arakanese Indian students to study in Britain.
Statehood question
After winning in the 1960 general election, Prime Minister U Nu appointed an Inquiry Commission to study whether Arakan Division should be granted statehood. The commission found that most Arakanese Buddhists supported statehood, whereas most Arakanese Indians opposed statehood. Sultan Mahmud proposed that a state for Arakanese Indians be established in the northern part of Arakan, where Indians were a majority. Mahmud cited the Mughal Empire's expeditions up till the Kaladan River under Shaista Khan in 1666 as forming the basis of the boundary between Arakanese Muslims and Buddhists. The Kaladan River divided Muslim-majority and Buddhist-majority areas.
Memorandum
On 20 October 1960, Sultan Mahmud and his colleagues submitted a memorandum to the Statehood Consultative Committee. The memorandum laid down two conditions for statehood: 1) if the Arakanese Buddhists would support their demands; and 2) if the constitution of the proposed province would include adequate safeguards for Indian autonomy. The governor of the new state would alternate between Indians and Arakanese Buddhists. The proposal mentioned that if the governor of a state was a Muslim, then the Speaker of the State Council would have to be a non-Muslim, but his deputy, a Muslim; and vice versa. The same arrangement would apply to most other elected or appointed public bodies. The memorandum called for freedom of religion, including freedom to learnreligious studies in educational institutions, according to personal beliefs. Arakanese Indians should be allowed to develop the Rohingya language and culture. The chief executive would have a designated officer to oversee the affairs of Arakanese Indians.