Guru Hargobind, on 24 June 1606, at age 11, was crowned as the sixth Sikh Guru. At his succession ceremony, he put on two swords: one indicated his spiritual authority ("piri") and the other, his temporal authority ("miri"). Because of the execution of Guru Arjan by Mughal Emperor Jahangir, Guru Hargobind from the very start was a dedicated enemy of the Mughal rule. He advised the Sikhs to arm themselves and fight. The death of his father at the hands of Jahangir prompted him to emphasise the military dimension of the Sikh community. Jahangir responded by jailing the 14 year old Guru Hargobind at Gwalior Fort in 1609, on the pretext that the fine imposed on Guru Arjan had not been paid by the Sikhs and Guru Hargobind. It is not clear as to how much time he spent as a prisoner. The year of his release appears to have been either 1611 or 1612, when Guru Hargobind was about 16 years old. Persian records, such as "Dabistan i Mazahib" suggest he was kept in jail for twelve years, including over 1617–1619 in Gwalior, after which he and his camp were kept under Muslim army's surveillance by Jahangir. According to Sikh tradition, Guru Hargobind was released from the bondage of prison on Diwali. This important event in Sikh history is now termed the "Bandi Chhor Divas" festival.