League, he successfully organised theJamiat Ulema-e-Hind movement in Assam. Jamiat was an ally of the Congress having a mass following among the nationalist Muslims. In the very crucial 1946 General Elections just on the eve of India’s independence, he wrested the Muslim majority Hailakandi seat from the hold of Muslim League. That victory virtually sealed the hopes and aspirations of the Muslim League to include southern Assam in Pakistan. It may be mentioned here that in that election, the bulk of the Muslim nominees of the Indian National Congress including Fakhruddin Ali Ahmed (5th President of India in later years) had lost to their Muslim League rivals miserably.
Assam's Surma Valley (now partly in Bangladesh) had Muslim-majority population. On the eve of partition, hectic activities intensified by the Muslim League as well Congress with the former having an edge. A referendum had been proposed for Sylhet District (now in Bangladesh). Mazumdar along with Basanta Kumar Das (then Home Minister of Assam) travelled throughout the valley organising the Congress and addressing meetings educating the masses about the outcome of partition on the basis of religion. On 20 February 1947, Moulvi Mazumdar inaugurated a convention – Assam Nationalist Muslim's Convention at Silchar. There after another big meeting was held at Silchar on 8 June 1947. Both the meetings, which were attended by a large section of Muslims paid dividend. He was also among the few who were instrumental in retaining the Barak Valley region of Assam with India. Mazumdar was the leader of the delegation that pleaded before the Radcliffe Commission that ensured that a part of Sylhet (now in Bangladesh) remains with India despite being Muslim-majority (present Karimganj district). [11].
Moulvi Mazumdar joined as a Cabinet Minister of Assam in 1946 with the portfolios of Local Self-Government, Agriculture and Veterinary. In 1947, India became free from British rule, when Mazumdar again
