MarNyin is a three day extensive puja performed in Sangag Choling Monastery in Beding village. This three day prayer ceremony usually falls in the month of October (8th month of Tibetan calendar) which coincides the three day animal sacrifice day by Hindus during their Dashain festival.
‘Mar’ means sacrifice and ‘Nyin’ means ‘day’. On the 7th day (called ‘saptami’ by hindus) and the 8th day ( called ‘Astami’) thousands of animals are sacrificed as part of Hindu ritual during Dashain festival. The same day extensive prayers and the Shetul Ngethun Ngingpu puja are conducted in Rolwaling Monastery for the liberation of the souls of the sacrificed animals.