Guru Har Krishan Ji is the eighth Guru of the Sikhs. He became Guru Ji at the age of five. He was born on July 7th, 1656 at Kiratpur Sahib Ji to Mata Kishan Kaur Ji. He was the youngest son of Guru Har Rai Sahib Ji. His elder brother Ram Rai was ignored for Guruship. Guru Har Krishan Ji received Gurgaddi on October 6th, 1661. The Guru proved at the tender age that an ideal man could be successful by meeting any challenge fearlessly and with courage.
Ram Rai became jealous of Guru Har Krishan Ji. Emperor Aurangzeb, called the Guru Ji to Delhi on complaint by Ram Rai, elder brother of the Guru. Guru Har Krishan Ji went to Delhi and stayed at the mansion of Raja Jai Singh Ji (now known as Gurdwara Bangla Sahib Ji). He started imparting Sikh instructions at Delhi, which was in the grip of smallpox epidemics in those days. Once, Lal Chand an ego-stricken Brahmin of Panjokhra, in order to test the intellect of the Guru Ji, asked him to translate meanings of a passage from Gita. It is said that the Guru Ji blessed a passing by illiterate and dumb Chhaju Gunga to expound the meanings, which he exposed with extraordinary wisdom.
Guru Har Krishan Ji remained on the throne of Guru Nanak Dev Ji for two and a half years. He left for heavenly abode at Delhi with smallpox at the age of eight on March 30th,1664.
Gurdwara Bangla Sahib Ji was erected at the site where the Guru Ji stayed during his visit to Delhi. He was cremated on the bank of river Yamuna. Gurdwara Bala Sahib Ji was constructed there in memory of the Guru Ji. It is believed that just by looking at the Guru Ji all the pain would vanish. His Darshan healed the sick and the miserable. On the last day, as per practice, the Guru Ji wanted to appoint his successor. By pointing out for his successor, he said “Baba Bakale”. This meant that his successor Tegh Bahadur was at Baba Bakale.