Guru Har Krishan, the eighth Sikh Guru, at the age of five received the jot, or the divine light and the spirit of Guru Nanak. It was passed on to him from the seventh Sikh Guru, Har Rai.
He led the Sikhs for two and a half years and spent part of that time in Delhi tending to the sick and poor during an epidemic of smallpox.
Thousands were healed by Guru Har Krishan. The disease was finally eradicated from Delhi, but the Guru took the suffering of the people upon himself and succumbed to smallpox at the tender age of eight.
Gurdwara Bangla Sahib now adorns the place where Guru Har Krishan stayed in Delhi. The amrit sarovar, or the holy tank, at the Gurdwara continues to heal thousands who visit daily.
About twenty-five years after Guru Har Krishan departed from this world, the tenth Sikh Guru, Gobind Singh, wrote the following words in his honor.
Remembering and meditating upon Sri Guru Har Krishan, beholding him, all pain vanishes.