 During the Quit India Movement, after the interception of Jayaprakash Narayan's Deoli letter addressed to him, he went underground in 1941 and went to Afghanistan to collect firearms and ammunition.He attended the Bombay AICC session (9 August 1942) and conducted the movement from the underground.He was held in Delhi on 8 January 1943 to be freed only on 3 April 1946 after which he continued his nationalist and trade union work.