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.
NATHANA SAHIB, Gurdwara near the village of Jand Magholi in Patiala district, is dedicated, according to Gurus habad Ratnakar Mahan Kosh, to Guru Tegh Bahadur, but is now called Gurdwara Nathana Sahib Patshahi Tisari. According to current tradition, Guru Amar Das stayed here 22 times during his annual pilgrimage journeys before he had met Guru Arigad and become his Sikh. The present building of the Gurdwara comprises a divan hall with the sanctum in the middle of it.
RATAN DAM by Tahkan, a translation and adaptation into Braj of Acharya Amar Singh`s Amar Kosh, the famous Sanskrit lexicon. Tahkan was one of the several poets who kept Guru Gobind Singh (1666-1708) company. In preparing Ratan Dam, the poet consulted works other than Amar Kosh as well. The manuscript which has so far remained unpublished comprises twentyeight chapters. The only extant copy (No. 2421) is preserved in the Central State Library, Patiala.