Prime Minister Narendra Modi paid tributes to Guru Teg Bahadur for his supreme sacrifice.
The prime minister has gone to Gurdwara Rakab Ganj Sahib in Delhi in an unscheduled visit.
Officials said there was no security or traffic barriers for people during the visit.
PM Modi had also paid homage to Guru Teg Bahadur on his Shaheedi Diwas on Saturday.
Guru Teg Bahadur was the ninth of 10 Gurus of the Sikh religion.
Born in Amritsar in 1621, Guru Tegh Bahadur was the youngest son of Guru Hargobind.
His martyrdom is remembered as the Shaheedi Divas of Guru Tegh Bahadur.
