In the entire range of Sikh history, the account of Banda Singh Bahadur has remained almost an enigmatic phenomenon for the historians. Most scholars have not been able to perceive how an ascetic of some credibility, engaged in exercise of occult powers made an instant decision of joining the Khalsa-fold after a short but fateful meeting with Guru Gobind Singh in his own hermitage.

Banda Singh Bahadur (27 October 1670 – 9 June 1716), born Lachman Dev and also popularly known as Veer Banda Bairagi, was a Sikh military commander who established a Sikh state with capital at Lohgarh (Haryana). At age 15 he left home to become an ascetic. He established a monastery at Nānded, on the bank of the river Godāvarī, where in September 1708 he was visited by, and became a disciple of, Guru Gobind Singh, who gave him the new name of Banda Bahadur after baptism as a Sikh. Armed with the blessing and authority of Guru Gobind Singh, he assembled a fighting force and led the struggle against the Mughal Empire. His first major action was the sack of the Mughal provincial capital, Samana, in November 1709. After establishing his authority in Punjab, Banda Singh Bahadur abolished the zamindari system, and granted property rights to the tillers of the land. He was captured by the Mughals and tortured to death in 1715-1716.