 In 1924, Khan appeared as a significant witness in the "O'Dwyer v. Nair" libel case, heard in the High Court in London over five weeks from 30 April 1924.Sir Michael O'Dwyer, Lieutenant-Governor of the Punjab until 1919, sued Sir Chettur Sankaran Nair in a case concerning matters arising from the Amritsar Massacre and the Punjab Disturbances of 1919, and in particular recruiting abuses in the Punjab between 1917 and 1918.The case turned into one of the longest civil hearings in English legal history up to that time.