Motilal joined in the movement against
Partition of Bengal (1905) in 1905. Later he was attached with armed revolutionaries of Bengal. He collected that revolver and supplied to
Kanailal Dutta by
Shrish Chandra Ghosh for the assassination of Naren Goswami in 1908. Roy established the Prabartak Sangha under the inspiration of
Sri Aurobindo. Roy's home as well as the Sangha were the important safe house of Indian freedom fighters. Hundreds of
Indian independence activists took shelter in Roy's house. Being a senior member of the revolutionary group he provided money and arms to the revolutionaries. On 21 February 1910 Aurobindo reached at Chandannagar and stayed in Roy's house for 42 days safely before going
Pondicherry. Roy assumed the title of
Sangha Guru or the chief spiritual leader of the organization. He also established school, library, students hostel publication house and
Khadi business for people. == References ==