He began by fetching water from the bdou, storing it in large earthen pitchers and serving it to visiting pilgrims.He eventually raised a gurudwara to serve langar or meals to the pilgrims on which account the complex came to be known as Gurdwara Langar Sahib. To collect funds for the Langar, he went out on preaching tours, army units being his special constituency. As his popularity and his resources grew, Sant Nidhan Singh took up construction of other gurudwaras.
The best known among them is the one at Manmad where pilgrims from the north have usually to wait for long hours for changing trains to Nanded. It is known as Gurdwara Guptsar. Three of the other Gurdwaras built at his instance are Gurdwara Nanakpuri and Gurdwara Ratangarh, near Nanded, and Gurdwara Sahib at Bhusaval. At his initiative were raised Gurdwara Tatt Khalsa at Karachi and Gurdwara Sahib at Kahuta, both now outside of India. Sant Nidhan Singh died at Nanded on 4 August 1947.
1. Patwant Singh, Gurdwaras in India and Around the World. Delhi, 1992
2. Sahi,Joginder Singh, Sikh Shrines in India and Abroad. Faridabad, 1978