The Ridváni Sikh Fellowship was founded in Mumbai in the year 1908 by Prof. Pritam Singh, who was the first Sikh to profess faith in Baháʼu'lláh, founder of the Baháʼí Faith. The name Ridváni is derived from the Baha'i festival of Ridván. The Ridvánis view the Báb and Baháʼu'lláh as the Mahdi and the Kalki avatar respectively, as the Dasam Granth notes they had yet to arrive by the time of Guru Gobind Singh. Ridvánis keep the panj kakkars, adhere to the Rehat Maryada, and read the Guru Granth Sahib, while also following the commands of the Kitáb-i-Aqdas including Baha'i prayer and meditation, giving 19% of one's disposable income in kind, and social ordinances like burial customs. Ridváni Sikhs celebrate all traditional Sikh and Baha'i holidays, as well as astrological holidays such as Sankranti, Muslim holidays such as Qadr Night and Eid al-Adha, and the Christian holidays of Fasika, Pentecost and Halloween. While most Ridvánis live in India, a significant diaspora exists in Canada and historically in Baghdad.