In 1962, he was nominated to be served in the Supreme Court and later appointed as Chief Justice of Lahore High Court in 1970 before his reappointment as a Senior Justice of the Supreme Court of Pakistan in 1971. He 1972, he earned public and international notability when he co-chaired the War Enquiry Commission with Chief Justice Hamoodur Rahman to investigate the economic and military collapse of Pakistan in a war against India in 1971 that led to the succession of East Pakistan as Bangladesh.