What is "udasi"

Udasi is a religious sect of ascetic sadhus centred in northern India. It is based on the teachings of Sri Chand (1494–1643), the son of Guru Nanak, the founder and the first Guru of Sikhism.

The Udasis were key interpreters of the Sikh philosophy and the custodians of important Sikh shrines until the Akali movement. They brought a large number of people in the Sikh fold during the 18th and the early 19th centuries. However, their religious practicies border on a syncretism of Sikhism and Hinduism. When the Singh Sabha, dominated by Khalsa Sikhs, redefined the Sikh identity in the early 20th century, the Udasi mahants were expelled from the Sikh shrines. Since then, the Udasis have increasingly regarded themselves as Hindus rather than Sikhs.