CHUHAR, BHAI, a Chaujhar Khatri of Lucknow, once travelled to Amritsar to see Guru Hargobind (1595-1644). He, according to Bhai Mani Singh, Sikhan di Bhagat MaJa, one day implored the Guru: "Pray, instruct me, Lord, in what constitutes the root of the Sikh faith." "Humility is its root," spoke