[2] After four years in June 1927, Khan graduated and was called to the English Bar by Middle Temple in January 1928.

In the aftermath of the war, he resumed his practice at Alor Setar, Kedah before being elevated to the bench.

[1] In 1958, Khan was appointed a judge of the Supreme Court of Malaysia (then Federation of Malaya) and was based in the capital, Kuala Lumpur.

[1] Ten years after elevation to the bench, Khan was appointed the Chief Justice of Borneo on 2 September 1968, an office which he held until his retirement on 31 December 1973.

[3] In December 1980, Khan came out of retirement after government decided to nominate him as the next President of the Senate of Malaysia.