In 1939, with Congress governments resigning from across India in protest against United Kingdom's unilateral decision to enroll Indian forces in the World War II, Assam United Party — an amalgamation of Muslim League with all shades of parties opposed to Congress — formed a successful coalition under Saadulah; however, Das was left out from the cabinet. The Government fell again in December 1941 but after about seven months of Governor's Rule, Saadulah managed to regain the numbers; yet again, Das was not inducted. In March 1945, Congress came into an understanding with the League and formed an unprecedented coalition government with virtually no opposition; Das was brought back to the ministry and assigned the portfolios of Industries and Cooperative Development.
