RAI SINGH was one of the Chali Mukte, the Forty Liberated Ones, who fell fighting for Guru Gobind Singh in the battle of Muktsar (29 December 1705). According to Bhalt Vahl Multdm Sindhi, Rai Singh was the son of Mai Das, a Vanjara Rajput, of `Alipur, in Multan district.
1. Padam, Piara Singh, and Giani Garja Singh, eds.,Curu kidn Sdkhidn. Patiala, 1986