He also was very critical of Bhutto and Mujibur Rahman (Mujib) when they quietly sustained the overturn of the Government of Pakistan under President Yahya Khan. He was later imprisoned alongside Bhutto and Mujib for sometime, sharing the limelight in the news for his imprisonment. In protest in 1969, Khan renounced the civil awards bestowed to him by the Government of Pakistan. He later advised President Yahya Khan on transferring the control of the government to Mujibur Rahman to prevent the breaking-up the unity of Pakistan as early as 1971.