Sikh Guru sacrificed his life so that Diwali could be celebrated. In Islmaic Mughal rule, Diwali was prohibited from being celebrated.
In 1737 ca., Bhai Mani Singh asked to Governor of Lahore, Zakaria Khan, for permission to hold the Diwali festival to celebrate Bandi Chhor Divas at the Harmandir Sahib. The permission was granted for a tribute of Rs.5,000. He hoped that he would be able to pay the sum out of the offerings to be made by the Sikhs who were invited to come. He issued initiations to the Sikhs of all places. The Governor alongside Diwan Lakhpat Rai had different intentions and he sent secret orders to his forces to make a surprise attack on the Sikhs during the festival. Bhai Mani Singh came to know of this plan and sent messages to tell the Sikhs not to come. The Sikhs that did come had to leave because of the presence of an unnecessary big military force and suspicious movement of the officers. Thus no money could be collected or paid to the government and Bhai Mani Singh was ordered to be executed.
Bhai Mani Singh was taken to Lahore in chains. When Bhai Mani Singh could not pay the fine the dues he had agreed to pay the Mughals (to legally hold the event) he was ordered to convert to Islam. Refusing to give up his beliefs he was ordered death by dismemberment. When the executioner started to begin with his wrists, Bhai Mani Singh sincerely reminded the executioner of the sentence, reminding the executioner of his punishment and to start at the joints in his hands.
Bhai Mani Singh was executed at Nakhaas Chowk, Lahore in December, 1738 ca. The Nakhaas Chowk has since been known as Shaheed Ganj – the place of martyrdom. Another commemorative shrine built in the late 1900s at a Gurdwara near Laungoval in the ruins of village Kamboval marks Bhai Mani Singh’s hometown and place of birth. By 1737, the Mughal government of Lahore had strictly prohibited the Sikhs to visit Amritsar and bathe in the holy tank. Zakaria Khan died in 1745