BHAGVANT SINGH HARIJI, BHAI (1892-1968), a lover of game, horticulturist and scholar, was born on 15 February 1892 to the erudition of his celebrated father, Bhai Kahn Singh, of Nabha, the creator of the immortal Gurushabad Ratnakar Mahan Kosh. Unobtrusively, and in his characteristically gentle and self abnegating manner, Bhagvant Singh carried the family learning into the second generation. His home provided the best education then available to a young man, though he did attend formally the Khalsa College at Amritsar, then the premier educational institution of the Sikhs.
GURUSHABAD RATANAKAR MAHAN KOSH, more popularly known by its shorter title Mahan Kosh, the great dictionary, by the celebrated man of letters and lexicographer, Bhai Kahn Singh, of Nabha, is a work unexcelled for its neatness and refinement of expression and monumental in its scope and size. It would indeed do justice to the title "Encyclopaedia." It is amazing how an individual conceived and planned a work of such a vast dimension and how he accomplished it single handed in a single lifetime.