Gurdwara Sisganj in Delhi is one of the holiest Sikh shrines in India. It stands prominently on Chandni Chowk, the main street in the former Mughal capital of Shahjahanabad (now popularly referred to as purani Dilli, or old Delhi). The site of Sisganj is immensely significant for its association with the martyrdom of the ninth Sikh Guru, Tegh Bahadur (1621–75), and also for its location, very close to the Red Fort, the seat of the Mughals. Sikh tradition2 informs us that Mughal Emperor Aurangzeb (1618–1707) was forcing a group of Kashmiri brahmins to convert to Islam, and they approached Guru Tegh Bahadur for help. The Guru declared that if Aurangzeb could convert him, everyone else would convert; if not, the emperor must leave them alone. The Guru, along with three of his disciples, Bhai Mati Das, Bhai Sati Das and Bhai Dyala, was imprisoned at the Mughal kotwali (prison) in Chandni Chowk. The three Sikhs were tortured in the Guru's presence to scare him into converting to Islam. It is said that Bhai Mati Das was sawn in half, Bhai Sati Das was wrapped in cotton and burnt and Bhai Dyala was boiled alive. Even after witnessing the torture and death of his followers, the Guru refused to convert.